1.

The center point of a line segment.( πΏπ, ππ)=(π₯1+π₯2Γ·2),(π¦1+π¦2Γ·2)

2.

An angle that measures more than 90Β° but less than 180Β°.

3.

The space between two intersecting lines.

4.

perpendicular

5.

linear

6.

a measurement used to find how far apart points are. β[(xβ - xβ)Β²+(yβ - yβ)Β²].

7.

A 90Β° angle, usually a corner.

8.

An angle that measures between 90Β° and 0Β°

9.

an angle of 180Β°

10.

adjacent

11.

supplementary

12.

complementary

13.

verticle