Optional EC Practice - Unit 1 Part C

A straight path with infinitely many points that extends in two opposite directions without end

• point

• line

• plane

• line segment

Indicated a location and has no size

• point

• line

• plane

• line segment

Has a start point and no end point

• point

• line

• plane

• ray

2 or more points on the same line

• coplanar points

• collinear points

• opposite rays

• line

has two endpoints and all points in between

• point

• line

• plane

• line segment

two angles that add up to 180 degrees

• complementary

• vertical

• supplementary

• adjacent

two angles that add up to 90 degrees

• complementary

• supplementary

• vertical

• adjacent

complementary angles are ________ congruent

• always

• sometimes, if they both equal 45 degrees

• never

supplementary angles are _______ congruent

• always

• never

• sometimes, when each angle is 90 degrees

vertical angles are __________congruent

• always

• sometimes

• never