The figure shows circle C with inscribed quadrilateral JKLM.

Question

Which statements are sufficient to know that all four angles of JKLM must be right angles?

A. <j=<L

B. <J and <K are right angles

c. m2J + m2L = 180° and m/K + m/M = 180°

D. JKL and LMJ are semicircles

E. JKL and KLM are semicircles
F. IMJ is a semicircle and m2J + m2K = 180°

Answer 1

A, B, C