- congruent triangleSSA Theorem?SAS: Dynamic Proof!SSS: Dynamic Proof!Triangle Exterior AngleTriangle Angle TheoremsCircumcenter (& Questions)Triangle Angle Sum TheoremTriangle Altitude Illustrator and Definition Writing PromptTriangle Inequality (II)Rectangle DiagonalsOrthocenter (& Questions)Exterior Angles of a TriangleTriangle Median Illustrator & Definition Writing PromptAnimation 27Area of a Triangle (Discovery)Triangle InequalitySpecial Line through Triangle V1 (Theorem Discovery)Isosceles Triangle (Properties)Triangle Angle Theorems (V2)Animation 102Exterior Angles of a TriangleExterior Angle of TriangleExterior Angle TheoremExterior Angle Theorem
