ACCESS - Isosceles Trapezoid
ABCD is an isosceles trapezoid. Explore the given theorems by dragging A, B, or C to change the trapezoid. 1. How are the base angles related? 2. How are the legs related? 3. How are the diagonals related? 4. Can you find any other angles that must be congruent? Hint: Use the diagonals as sides of the angles. Remember your theorems on parallel lines cut by transversals.