| Term | Definition |
|---|
| congruent polygons | have congruent corresponding parts. |
| congruent | If two angles of one triangle are ____ to two angles of another triangle, then the third angles are congruent. |
| SSS Postulate | If the three sides of one triangle are congruent to the three sides of another triangle, then the two triangles are congruent. |
| SAS Postulate | If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent. |
| ASA Postulate | If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent. |
| AAS Theorem | If two angles and a nonincluded side of one triangle are congruent to two angles and the corresponding nonincluded side of another triangle, then the triangles are congruent. |
| legs | the congruent side of an isosceles triangle. |
| base | the non-congruent side of an isosceles triangle |
| legs | the sides that form the right angle in a right triangle |
| hypotenuse | The side that does not connect to the right angle in a right triangle. |
| CPCTC | Corresponding Parts of Congruent Triangles are Congruent |
| HL Theorem | If the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of another right triangle, then the triangles are congruent. |
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