Juan is going to use SAS to prove that ABC ≈ DCB
Which step is necessary in Juan's proof?

A. Prove that BC = BC by the reflexive property

B. Prove that ZA ZD by alternate interior angles,

C. Prove that ZABC - ZBCD by CPCTC.

D. Prove that AB = CD by CPCTC.

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°