Question# 1. Polygon angle sum (irregular polygon)

Question# 2. Triangle inequality (relating angles)

Question# 3. No video.

Question# 4. Triangle inequality (Sum of any two sides greater than the third side)

Question# 5. Solving a quadratic

Question# 6. Reflection

Question# 7. Rotation

Question# 8. Composition of transformations (Dilation followed by translation)

Good luck.