# Use the congruence of triangles to prove properties of the special quadrilaterals, such as: CCT the opposite angles of a parallelogram are equal the diagonals of a parallelogram bisect each other the diagonals of a rectangle are equal

1. | Convincingly Congruent and Simply Similar 2 - identify congruent and similar shapes | |

2. | Convincingly Congruent and Simply Similar 1 - identify congruent and similar shapes |