- integrali
- Congruent Segments (Quick Exploration)
- Animation 18
- Proving Segments Congruent (Exercise)
- Congruent Angles: Definition
- Animation 36
- Proving Angles Congruent (1)
- Proving Angles Congruent (2)
- Proving Angles Congruent
- Midpoint Definition
- Animation 56
- Segment Bisector Definition
- Animation 160
- Perpendicular Lines - Quick Intro
- Segment Bisectors (Definitions)
- Perpendicular Bisector Definition
- Perpendicular Bisector Definition
- Animation 15
- Angle Bisector Definition (I)
- Complementary Angles (Quick Exploration)
- Animation 48
- Supplementary Angles (Quick Exploration)
- Animation 19
- Circle vs. Sphere
- Triangle Altitude Illustrator and Definition Writing Prompt
- Animation 162
- Triangle Median Illustrator & Definition Writing Prompt
- Animation 161
- Equilateral Action!!!
- Animation 165
- Equiangular Action!!!
- Animation 166
- Regular Polygon Action!
- Animation 193
