# Study sets matching "math geometry flashcards"

Study sets

Diagrams

Classes

Users

line

line segment

ray

parallel lines

A continuous extent of length, straight or curved, without and…

part of a line with two endpoints

A part of a line, with one endpoint, that continues without en…

lines in the same plane that never intersect

line

A continuous extent of length, straight or curved, without and…

line segment

part of a line with two endpoints

line segment

line

ray

surface of paper is ____ which gives id…

a straight line with a beginning and an end;... has definite leng…

a line segment extending endlessly on both sides;... doesn't have…

part of a line that extends endlessly in one direction only;... d…

flat

line segment

a straight line with a beginning and an end;... has definite leng…

line

a line segment extending endlessly on both sides;... doesn't have…

Area

Area of Rectangles/Squares

Area of Triangles

Perimeter

The measure, in square units, of the inside of a plane figure.

Length x Width

(Length x Width) divided by 2

The distance around a polygon.

Area

The measure, in square units, of the inside of a plane figure.

Area of Rectangles/Squares

Length x Width

Space

Plane

Segment

Regular

An undefined term thought of as the set of all points. This ex…

An undefined term thought of as a flat surface that extends in…

Two points and all the points between them that are collinear…

All sides are equal and all angles are equal within a polygon

Space

An undefined term thought of as the set of all points. This ex…

Plane

An undefined term thought of as a flat surface that extends in…

Angle

Ray

Complementary Angles

Supplementary Angles

The union of two rays with a common endpoint called the vertex.

Part of a line with one endpoint. It extends indefinitely in o…

The sum of two angles is 90 degrees.

The sum of two angles is 180 degrees.

Angle

The union of two rays with a common endpoint called the vertex.

Ray

Part of a line with one endpoint. It extends indefinitely in o…

LINEAR PAIR

SUPPLEMENTARY ANGLE

COMPLEMENTARY ANGLES

VERTICAL ANGLES

TWO LINES THAT FORM A STRAIGHT LINE 180 DEGREES... Two adjacent a…

two angles whose measures have a sum of 180 degrees

Two angles whose sum is 90 degrees

Angles that are across from one another. EQUAL (congruent) to…

LINEAR PAIR

TWO LINES THAT FORM A STRAIGHT LINE 180 DEGREES... Two adjacent a…

SUPPLEMENTARY ANGLE

two angles whose measures have a sum of 180 degrees

Perpendicular Lines

Parallel Lines

Right Triangle

Obtuse Triangle

Lines that cross at a 90 degree angle

lines in the same plane that never intersect

A triangle that has a 90 degree angle.

A triangle with one angle that is greater than 90 degrees.

Perpendicular Lines

Lines that cross at a 90 degree angle

Parallel Lines

lines in the same plane that never intersect

Acute Angle

Acute Triangle

Adjacent Angles

Complementary Angles

an angle that measures less than 90 degrees

A triangle with 3 acute angles

Angles that have a common side and a common vertex (corner poi…

Two angles whose sum is 90 degrees

Acute Angle

an angle that measures less than 90 degrees

Acute Triangle

A triangle with 3 acute angles

circumcenter

perpendicular bisector

bisect

centroid

where all the perpendicular bisectors of a triangle intersect

Bisects a segment and is perpendicular to it.

to cut exactly in half

The point of concurrency of the medians of a triangle

circumcenter

where all the perpendicular bisectors of a triangle intersect

perpendicular bisector

Bisects a segment and is perpendicular to it.

Point

Line

Plane

Segment

Represents a position in space.

Continues without end in opposite directions.

A flat surface with no thickness that continues without end in…

Part of a line with two endpoints.

Point

Represents a position in space.

Line

Continues without end in opposite directions.

parallel lines

skew lines

parallel planes

transversal

Coplanar lines that do not intersect.

Lines that do not intersect and are not coplanar.

Two planes that do not intersect.

A line that intersects two coplanar lines at two distinct poin…

parallel lines

Coplanar lines that do not intersect.

skew lines

Lines that do not intersect and are not coplanar.

circumcenter

perpendicular bisector

bisect

centroid

where all the perpendicular bisectors of a triangle intersect

Bisects a segment and is perpendicular to it.

to cut exactly in half

The point of concurrency of the medians of a triangle

circumcenter

where all the perpendicular bisectors of a triangle intersect

perpendicular bisector

Bisects a segment and is perpendicular to it.

Polygon

Regular Polygon

Triangle

Quadrilateral

2D shape... Closed... Three or more side

A polygon whose lines are all the same length

A three sided polygon

A four-sided polygon

Polygon

2D shape... Closed... Three or more side

Regular Polygon

A polygon whose lines are all the same length

area

base/height of a parallelogram

base/height of a triangle

compose

measured in square units, is the number of unit squares that c…

Any of the four sides of a parallelogram can be chosen as a ba…

Any of the three sides of a triangle can be chosen as a base.…

"put together"

area

measured in square units, is the number of unit squares that c…

base/height of a parallelogram

Any of the four sides of a parallelogram can be chosen as a ba…

Triangle

Rectangle

trapozoid

Polygon

A shape with 3 sides and three angles

A plane figure with four strait sides and opposite sides are e…

a quadrilateral with only one pair of parallel sides.

a figure with at least three straight sides and angles

Triangle

A shape with 3 sides and three angles

Rectangle

A plane figure with four strait sides and opposite sides are e…

acute triangle

right triangle

obtuse triangle

isosceles triangle

a triangle with 3 acute angles

a triangle with 1 right angle

a triangle with 1 obtuse angle

a triangle that has two congruent sides

acute triangle

a triangle with 3 acute angles

right triangle

a triangle with 1 right angle