| A | B |
|---|
| space | the set of all possible points |
| line segment | a part of a line with a beginning point and an end point |
| ray | part of a line with a beginning point but no end point |
| opposit rays | 2 rays with a common endpoint that form a line |
| collinear | points on the same liine |
| coplanar | points and or lines on the same plane |
| angle | union of 2 rays with a common endpoint |
| adjacent angles | andgles with a common endpoint and common side but no interior points in common (side by side) |
| congruent | items that have the same measure |
| midpoint | of a segment is a point that divides segments into 2 congruent parts |
| segment bisector | a ray line or segment that goes through the midpoint |
| angle bisector | a ray that divides angles into 2 congruent angles |
| perpendicular lines | 2 lines that intersect @ a right angle |
| postulate | statement that we accept as true without proof |
