# Study sets matching "term:acute angles = angles smaller that 90 degrees"

Study sets

Diagrams

Classes

Users

Rectangle

Less

Obtuse

Quadrilateral

Is a quadrilateral with four right angles

An acute angle is an angle less than 90 degrees

Triangle has one angle with more than 90 degrees

Is a shape with 4 sides

Rectangle

Is a quadrilateral with four right angles

Less

An acute angle is an angle less than 90 degrees

right angle

perpendicular line segments

right triangle

acute angle

a 90 degree angle

two line segments that cross to form 90 degree angle

a triangle with an internal angle equal to 90 degrees

an angle that is less than 90 degrees but greater than 0 degre…

right angle

a 90 degree angle

perpendicular line segments

two line segments that cross to form 90 degree angle

Angle

Acute Angle

Obtuse Angle

Right Angle

The amount of turning between two lines meeting at a common po…

an angle measuring less than 90 degrees.

any angle between 90 degrees and 180 degrees.

an angle measuring 90 degrees.

Angle

The amount of turning between two lines meeting at a common po…

Acute Angle

an angle measuring less than 90 degrees.

right angle

obtuse angle

straight angle

complementary angles

an angle that is exactly 90 degrees.

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

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 deg…

Supplementary Angles

Complementary Angles

Linear Pair

Adjacent Angles

Two angles whose sum is 180 degress

Two angles whose sum is 90 degrees

Two angles that are adjacent and form a straight line

Two angles that share a common ray.

Supplementary Angles

Two angles whose sum is 180 degress

Complementary Angles

Two angles whose sum is 90 degrees

acute angle (definition)

acute triangle (definition)

complementary angles

equilateral triangle

an angle with a measure greater than 0 degrees and less than 9…

a triangle having three acute angles

two angles are complementary if the sum of their measures is 9…

a triangle having three congruent sides and all angles measure…

acute angle (definition)

an angle with a measure greater than 0 degrees and less than 9…

acute triangle (definition)

a triangle having three acute angles

Ray

Line

Line Segment

Acute Angles

one endpoint and extends without end in one direction only

a straight path that extends without end in opposite directions

two endpoints and all the points between the endpoints

An angle that measures less than ninety degrees

Ray

one endpoint and extends without end in one direction only

Line

a straight path that extends without end in opposite directions

Vertical Angles

Linear Pair

Naming Angles - Method 1: Name the Vert…

Naming Angles - Method 2: Trace the Ang…

Opposite angles created by crossed lines. Vertical angles are…

Group of angles, adding up to 180°, that create a straight lin…

Use the Vertex to name the angle. The angle in the diagram is…

Trace out the angle using a point, the vertex, and another poi…

Vertical Angles

Opposite angles created by crossed lines. Vertical angles are…

Linear Pair

Group of angles, adding up to 180°, that create a straight lin…

right angle

obtuse angle

straight angle

complementary angles

an angle that is exactly 90 degrees.

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

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 deg…

Adjacent angles

Interior angles

Exterior angle

Alternate interior angles

Angles that lie next to each other

Lie between the two lines that are cut by transversal

Lie outside the two lines that are cut by transversal

Interior angles that lie on the opposite sides of a transversal

Adjacent angles

Angles that lie next to each other

Interior angles

Lie between the two lines that are cut by transversal

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

an angle that is exactly 90 degrees.

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

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 deg…

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.

Angles whose measure adds up to 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 deg…

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 deg…

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 deg…

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 deg…

Vertical Angles

Acute Angle

Adjacent Angles

Alternate Exterior Angles

Opposite angles that share a vertex (point).

An angle less than 90 degrees.

An angle that share a side and a vertex.

Congruent angles on the outside of the parallel lines.

Vertical Angles

Opposite angles that share a vertex (point).

Acute Angle

An angle less than 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.

acute angle

right angle

obtuse angle

straight angle

Angles whose measure is greater than degrees and less than 90…

Angle that measures exactly 90 degrees.

Angle that is greater than 90 degrees and less that 180 degree…

Angle that measures exactly 180 degrees.

acute angle

Angles whose measure is greater than degrees and less than 90…

right angle

Angle that measures 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.

Vertex

Supplementary angles

Complementary angles

Acute angles

A point where two or more straight lines meet.

Two angles whose sum is 180 degrees... Angles that add to 180 deg…

Two angles whose sum is 90 degrees

angles that are less than 90 degrees

Vertex

A point where two or more straight lines meet.

Supplementary angles

Two angles whose sum is 180 degrees... Angles that add to 180 deg…

acute angle

right angle

obtuse angle

straight angle

An angle that measures less than 90 degrees.

An angle that measures exactly 90 degrees.

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

An angle that measures exactly 180 degrees; a straight line.

acute angle

An angle that measures less than 90 degrees.

right angle

An angle that measures exactly 90 degrees.

angle

vertex

protractor

degree

The figure formed by two rays from the same endpoint.

The intersection of the two sides of an angle.

Instrument used to measure angles.

The basic unit in which angles are measured.

angle

The figure formed by two rays from the same endpoint.

vertex

The intersection of the two sides of an angle.