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ANGLE

VERTEXT

ACUTE ANGLE

RIGHT ANGLE

a figure formed by two rays with a common endpoint

a point where two sides of an angle intersect

between 0 and 90 degrees

90 degrees

ANGLE

a figure formed by two rays with a common endpoint

VERTEXT

a point where two sides of an angle intersect

Obtuse Angle

Acute Angle

Right Angle

Straight Angle

Angle with a measure between 90 degrees and 180 degrees

Angle with a measure between 0 degrees and 90 degrees

Angle with a measure of 90 degrees

Angle with a measure of 180 degrees

Obtuse Angle

Angle with a measure between 90 degrees and 180 degrees

Acute Angle

Angle with a measure between 0 degrees and 90 degrees

vertical angle pair

linear pair

corresponding angle pair

alternate interior angle pair

non-adjacent angles formed by two intersecting lines

two adjacent angles that form a straight line

same side of transversal; one interior, one exterior

opposite sides of transversal; both between the lines

vertical angle pair

non-adjacent angles formed by two intersecting lines

linear pair

two adjacent angles that form a straight line

right angle

obtuse angle

straight angle

complimentary angles

angle that measures exactly 90 degrees.

angle that is between 90 degrees and 180 degrees.

angle that measures exactly 180 degrees.

Angles whose measure adds up to 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is between 90 degrees and 180 degrees.

right angle

obtuse angle

straight angle

complimentary angles

an angle that is exactly 90 degrees.

an angle that is greater than 90 degrees and less than 180 de…

an angle that measures exactly 180 degrees.

2 Angles that add up to 90 degrees.

right angle

an angle that is exactly 90 degrees.

obtuse angle

an angle that is greater than 90 degrees and less than 180 de…

Angle

Acute Angle

Right Angle

Obtuse Angle

Formed by two rays with a common endpoint

An angle with a measure between 0 degrees and 90 degrees

An angle with a measure of 90 degrees

An angle with a measure between 90 degrees and 180 degrees

Angle

Formed by two rays with a common endpoint

Acute Angle

An angle with a measure between 0 degrees and 90 degrees

right angle

obtuse angle

acute angle

degrees

an angle that is exactly 90 degrees.

an angle that is greater than 90 degrees and less than 180 de…

angles that are greater than 0 degrees and less than 90 degrees

a unit for measuring angles

right angle

an angle that is exactly 90 degrees.

obtuse angle

an angle that is greater than 90 degrees and less than 180 de…

Right angles

Acute angles

Straight angles

Obtuse angles

Angles that equal 90 degrees.

Angles that are less than 90 degrees but more than 0 degrees.

Angles that equal 180 degrees

Angles that are more than 90 degrees but less than a 180 degr…

Right angles

Angles that equal 90 degrees.

Acute angles

Angles that are less than 90 degrees but more than 0 degrees.

Exterior Angle of a Polygon

Remote Interior Angles of a Triangle

Linear Pair Postulate

Vertical Angle Theorem

an angle that forms a linear pair with one of the angles of t…

the two angles non-adjacent to the exterior angle.

If two angles form a linear pair, then they are supplementary.

Vertical angles are congruent.

Exterior Angle of a Polygon

an angle that forms a linear pair with one of the angles of t…

Remote Interior Angles of a Triangle

the two angles non-adjacent to the exterior angle.

right angle

obtuse angle

straight angle

complimentary angles

an angle that is exactly 90 degrees.

an angle that is greater than 90 degrees and less than 180 de…

an angle that measures exactly 180 degrees.

2 Angles that add up to 90 degrees.

right angle

an angle that is exactly 90 degrees.

obtuse angle

an angle that is greater than 90 degrees and less than 180 de…

Angle

Vertex

Acute Angle

Obtuse Angle

two rays with a common endpoint

the common endpoint of two rays ... that form an angle

An angle whose measure in degrees is between 0 and 90

An angle whose measure in degrees is between 90 and 180

Angle

two rays with a common endpoint

Vertex

the common endpoint of two rays ... that form an angle

right angle

obtuse angle

straight angle

complimentary angles

angle that measures exactly 90 degrees.

angle that is >90 degrees and <180 degrees.

angle that measures exactly 180 degrees.

Two angles whose measures have a sum of 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is >90 degrees and <180 degrees.

Angle

Vertex

Acute Angles

Obtuse Angles

a figure formed by two rays with a common endpoint.

the point of intersection of two sides of an angle or a figure.

between 0 anf 90 degrees

between 90 and 180 degrees

Angle

a figure formed by two rays with a common endpoint.

Vertex

the point of intersection of two sides of an angle or a figure.

Right Angle

Obtuse Angle

Complementary Angles

Supplementary Angles

直角... Exactly 90 degrees.... 90度角

Between 90 degrees and 180 degrees.

Two angles that add to 90 degrees when together.

Two angles that add to 180 degrees when together.

Right Angle

直角... Exactly 90 degrees.... 90度角

Obtuse Angle

Between 90 degrees and 180 degrees.

Acute angles

Right Angle

Obtuse Angle

Straight Angle

An angle whose measure is between 0 and 90 degrees

An angle whose measure is exactly 90 degrees

An angle whose measure is between 90 - 180 degrees

An angle whose measure is exactly 180 degrees

Acute angles

An angle whose measure is between 0 and 90 degrees

Right Angle

An angle whose measure is exactly 90 degrees

right angle

obtuse angle

straight angle

complimentary angles

angle that measures exactly 90 degrees.

angle that is >90 degrees and <180 degrees.

angle that measures exactly 180 degrees.

Two angles whose measures have a sum of 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is >90 degrees and <180 degrees.

right angle

obtuse angle

straight angle

complimentary angles

an angle that is exactly 90 degrees.

an angle that is greater than 90 degrees and less than 180 de…

an angle that measures exactly 180 degrees.

2 Angles that add up to 90 degrees.

right angle

an angle that is exactly 90 degrees.

obtuse angle

an angle that is greater than 90 degrees and less than 180 de…

right angle

obtuse angle

straight angle

complimentary angles

angle that measures exactly 90 degrees.

angle that is >90 degrees and <180 degrees.

angle that measures exactly 180 degrees.

Two angles whose measures have a sum of 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is >90 degrees and <180 degrees.

angle

degree

ray

protractor

two rays with common endpoint form an angle

the most common unit of measure for angles

a part of a line that has one endpoint and extends indefinite…

an instrument marked in degrees, used for measuring or drawin…

angle

two rays with common endpoint form an angle

degree

the most common unit of measure for angles

Remote Interior Angles of a Triangle

Vertical Angle Theorem

Triangle Angle-Sum Theorem

Exterior Angle Theorem

the two angles non-adjacent to the exterior angle.

Vertical angles are congruent.

The sum of the measures of the angles of a triangle is 180°.

The measure of each exterior angle of a triangle equals the s…

Remote Interior Angles of a Triangle

the two angles non-adjacent to the exterior angle.

Vertical Angle Theorem

Vertical angles are congruent.

right angle

obtuse angle

straight angle

complimentary angles

an angle that is exactly 90 degrees.

an angle that is greater than 90 degrees and less than 180 de…

an angle that measures exactly 180 degrees.

2 Angles that add up to 90 degrees.

right angle

an angle that is exactly 90 degrees.

obtuse angle

an angle that is greater than 90 degrees and less than 180 de…

right angle

obtuse angle

straight angle

complimentary angles

angle that measures exactly 90 degrees.

angle that is >90 degrees and <180 degrees.

angle that measures exactly 180 degrees.

Two angles whose measures have a sum of 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is >90 degrees and <180 degrees.

Linear Pair Postulate

Vertical Angle Theorem

Adjacent Angles

Midpoint

If two angles form a linear pair, then they are supplementary.

Vertical angles are congruent.

Angles in the same plane that have a common vertex and a comm…

A point on a segment that bisects the segment

Linear Pair Postulate

If two angles form a linear pair, then they are supplementary.

Vertical Angle Theorem

Vertical angles are congruent.

straight angle

angle

vertex

naming angles

opposite rays that are part of the same line and share an end…

a figure formed by two noncollinear rays that have a common e…

the common endpoint of two rays that form an angle

straight angle

opposite rays that are part of the same line and share an end…

angle

a figure formed by two noncollinear rays that have a common e…

Angle

Acute Angle

Right Angle

Obtuse Angle

Formed by two rays that have the same endpoint.

Angles whose measure is between 0 degrees and 90 degrees

Angle that measures 90 degrees.

Angle that is between 90 degrees and 180 degrees.

Angle

Formed by two rays that have the same endpoint.

Acute Angle

Angles whose measure is between 0 degrees and 90 degrees

right angle

obtuse angle

straight angle

acute angle

an angle that is exactly 90 degrees.

an angle that is greater than 90 degrees and less than 180 de…

an angle that measures exactly 180 degrees.

angles that are greater than 0 degrees and less than 90 degrees

right angle

an angle that is exactly 90 degrees.

obtuse angle

an angle that is greater than 90 degrees and less than 180 de…

right angle

obtuse angle

straight angle

complementary angles

angle that measures exactly 90 degrees.

angle that is >90 degrees and <180 degrees.

angle that measures exactly 180 degrees.

Two angles whose measures have a sum of 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is >90 degrees and <180 degrees.

Angle

vertex (pl. vertices)

acute angle

right angle

a figure formed by two rays with a common end point

the point of intersection of two sides of an angle or figure

between 0 and 90 degrees

90 degrees

Angle

a figure formed by two rays with a common end point

vertex (pl. vertices)

the point of intersection of two sides of an angle or figure

right angle

obtuse angle

straight angle

acute angle

an angle that is exactly 90 degrees.

an angle that is greater than 90 degrees and less than 180 de…

an angle that measures exactly 180 degrees.

angles that are greater than 0 degrees and less than 90 degrees

right angle

an angle that is exactly 90 degrees.

obtuse angle

an angle that is greater than 90 degrees and less than 180 de…

right angle

acute angle

obtuse angle

straight angle

an angle that measures 90 degrees

an angle that measures between 0 and 90 degrees

an angle that measures between 90 and 180 degrees

an angle that measures 180 degrees

right angle

an angle that measures 90 degrees

acute angle

an angle that measures between 0 and 90 degrees

Acute angle

Right angle

Obtuse angle

Straight angle

an angle that measures less than 90 degrees

an angle that measures 90 degrees

An angle that measures more than 90 degrees but less than 180…

measures 180 degrees

Acute angle

an angle that measures less than 90 degrees

Right angle

an angle that measures 90 degrees

Complementary Angles

Supplementary Angles

Reflex Angle

Right Angle

Two angles whose sum is 90 degrees

Two angles whose sum is 180 degrees

An angle greater than 180 degrees (but less than 360)

an angle that measures 90 degrees

Complementary Angles

Two angles whose sum is 90 degrees

Supplementary Angles

Two angles whose sum is 180 degrees

right angle

obtuse angle

straight angle

complementary angles

angle that measures exactly 90 degrees.

angle that is greater than 90 degrees and less than 180 degre…

angle that measures exactly 180 degrees.

Two angles whose measure adds up to 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is greater than 90 degrees and less than 180 degre…

acute angle

adjacent angles

alternate exterior angles

alternate interior angles

an angle whose measure is between 0 and 90 degrees

two angles with the same vertex and a common side between them

two angles that are outside the parallel lines and on opposit…

two angles that are inside the parallel lines and on opposite…

acute angle

an angle whose measure is between 0 and 90 degrees

adjacent angles

two angles with the same vertex and a common side between them