Geometry Flashcards

Front

acute angle

Back

an angle greater than 0 but less than 90

Front

obtuse angle

Back

an angle greater than 90 but less than 180

Front

right angle

Back

an angle that equals 90 degrees

Front

vertical angles

Back

pairs of angles that share a vertex point and have rays that point in opposite directions

Front

supplementary angles

Back

TWO angles whose sume is 180 degrees

Front

complementary angles

Back

TWO angles whose sum is 90 degrees

Front

ray

Back

a portion of a line that has a starting point and then extends forever in one direction

Front

line

Back

a set of connected points that extends forever in two directions

Front

line segment

Back

a portion of a line that has both a starting and ending point

Front

collinear

Back

when 3 points all lie on the same line