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Geometry Chapter 1

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Section 1

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Angle Bisector

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Geometry Math

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Date created

Mar 1, 2020

Cards (27)

Section 1

(27 cards)

Angle Bisector

Front

A ray divides an angle into 2 congruent parts

Back

Segment Bisector

Front

A point, line, ray, line segment, or plane that intersects a segment at its midpoint. (It divides the segment into 2 congruent parts)

Back

Point

Front

Drawn as a dot Labeled with a capital letter Doesn't have size or shape

Back

Acute Angle

Front

Measures less than 90 degrees

Back

Obtuse Angle

Front

Measures more than 90 degrees

Back

Coplanar Points

Front

Points on the same plane

Back

Complementary Angles

Front

2 angles whose measures add up to 90 degrees

Back

Supplementary Angles

Front

2 angles that whose measures add up to 180 degrees

Back

Intersection

Front

The set of points shared by 2 figures

Back

Adjacent Angles

Front

Two angles that share a side

Back

Line

Front

Drawn with arrows on both ends Named by 2 points OR a lowercase letter There is 1 of these through any 2 points

Back

Plane

Front

Drawn as a slanted 4 sided figure Named by 3 points There is 1 of these through any 3 points

Back

Opposite Rays

Front

Rays that share an endpoint but go in opposite directions

Back

Midpoint

Front

The point that divides a segment into 2 congruent parts

Back

Angles

Front

Made of 2 rays with the same end point Each ray is a side The endpoint is the vertex Named by 3 points OR the point that is the vertex

Back

Linear Pair

Front

Adjacent angles that are supplementary

Back

Angle Addition Postulate

Front

If P is in the interior of <RST then the measure of <RST is equal to the sum of the measures of <RSP and <PST If P is in the interior of <RST then m<RST = m<RSP + m<PST

Back

Postulate

Front

A rule that is accepted without proof

Back

Segment Addition Postulate

Front

If B is between A and C, then AB + BC = AC If AB + BC = AC then B is between A and C

Back

Ray

Front

Point on one end, arrow on the other Named by 2 points

Back

Vertical Angles

Front

Opposite angles created from intersecting lines.

Back

Right Angle

Front

Measures 90 degrees

Back

Congruent Angles

Front

Angles with the same measure

Back

Segment

Front

Points on both ends Named by endpoints

Back

Congruent Segments

Front

Segments have the same length

Back

Distance

Front

The length between 2 points

Back

Collinear Points

Front

Points on the same line

Back