- Julie Kirkpatrick
Below is quadrilateral ABCD inscribed in a circle. Move points B and C with the sliders.
1. Write down at least 3 observations about the sum of the angles in ABCD. 2. Write a conjecture about inscribed quadrilaterals based on your observations? 3. How would you go about proving this? (Scroll down for hint) Hint: Use what you know about inscribed angles and inscribed arcs.