7-3, Congruent Polygons (8.G.1, 8.G.2, and 8.G.3)
Congruent polygons are polygons that have the same size and shape. When two polygons are congruent, you can slide, flip, or turn one so that it fits exactly on top of the other one.
KEY CONCEPTS: Showing Triangles are Congruent
To demonstrate that two triangles are congruent, show that the following parts of one triangle are congruent to the corresponding parts of the other triangle.
KEY CONCEPTS: Showing Triangles are Congruent
To demonstrate that two triangles are congruent, show that the following parts of one triangle are congruent to the corresponding parts of the other triangle.
- Side-Side-Side (SSS)
- Side-Angle-Side (SAS)
- Angle-Side-Angle (ASA)
4-3 Congruent Triangles (4:06) covers corresponding sides and angles
4-4 covers SSS and SAS (9:00)
4-5 covers ASA, AAS, and HL (7:09)