1
They are lines will cross to make right angles.
2
It is the shadow that a pencil leaves on a paper
3
It is an angle that measure minus 90° degrees
4
Is a flat surface extending in height and width
5
They are lines will never touch and have the same distance
6
It is an angle that measures 90° degrees
7
They are lines that will cross, but do not make a rght angle and have a one common point
8
They are a straight line which is not horizontal or vertical
9
It the union of a 2 points
10
It is an angle that measures 180° degrees