Geometry Topic 1 Vocab FLASHCARD

Front

points that lie on the same line

Back

collinear points

Front

an angle that measures exactly 180 degrees

Back

straight angle

Front

angles that have the same measure

Back

congruent angles

Front

an angle that measures less than 90 degrees

Back

acute angle

Front

the number of degrees between the two rays

Back

measure of an angle

Front

an angle that measures more than 90 degrees but less than 180 degrees

Back

obtuse angle

Front

a part of a line that has two endpoints

Back

line segment

Front

a straight line that extends infinitely in both directions

Back

line

Front

two angles that add up to 180 degrees

Back

supplementary angles

Front

two angles that add up to 90 degrees

Back

complementary angles