| A | B |
|---|
| midpoint | Congruent segments |
| parallel lines | congruent angles(mostly) |
| right angles | congruent angles |
| triangle congruencies | SAS ASA SSS AAS HL |
| congruent polygons | same size and same shape |
| congruent triangles | congruent parts |
| minimum number of statements prior to a triangle congruency | 3 |
| triangle with congruent sides | triangle with congruent angles |
| equilateral | equiangular |
| each angle on an equilateral triangle | 60 degrees |
| vertex bisector of an isosceles triangle | a segment perpendicular to the base at its midpoint |
| hypotenuse | side opposite the right angle |
| leg | side attached to a right angle |
| base angle | opposite the leg of an isosceles triangle |
| base | opposite the vertex of an isosceles triangle |
| intersecting lines | congruent vertical angles |
