Interactive
Mangahigh

Mangahigh: Shape: Inscribed Angles in Circles

For Students 9th - 10th Standards
Use theorems to prove inscribed angles in circles.
Interactive
Mangahigh

Mangahigh: Shape: Inscribed and Central Angles in Circles

For Students 9th - 10th Standards
Use theorems to prove ideas of inscribed and central angles in circles.
Interactive
Walter Fendt

Walter Fendt: Thales' Circle

For Students 9th - 10th Standards
A short interactive activity to prove that a triangle inscribed in a semicircle is right-angled.