CK-12 Foundation
Ck 12: Interactive Geometry: 5.5 Geometry Software for Constructions
Use interactive geometry software to construct an equilateral triangle that maintains its shape even if you move its vertices.
Quia
Ixl Learning: Similarity
Brush up on your math skills relating to similarity then try some practice problems to test your understanding.
Quia
Ixl Learning: Congruence
Brush up on your math skills relating to congruence then try some practice problems to test your understanding.