Developing Proof The plan suggests a proof of Theorem 6-19. Write a proof that follows the plan.
Given: Isosceles trapezoid ABCD with
Prove:
Plan: Begin by drawing
Name each type of special quadrilateral that can meet the given condition. Make sketches to support your answers.
Proof Prove Theorem 6-20.
Given: Isosceles trapezoid ABCD with
Prove:
Prove:
Proof Prove that the angles formed by the noncongruent sides of a kite are congruent. (Hint: Draw a diagonal of the kite.)
Determine whether each statement is true or false. Justify your response.
C Challenge
Proof Given: Isosceles trapezoid TRAP with
Prove: