13. In circle A, secant EC and tangent BC intersect at C.

mEB = 166° and mBD = 80°

B

А.

С

What is mZBCD ?

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°

Which set of lengths could represent the sides of a triangle? a. 3, 7, 10 b. 4, 5, 10 c. 6, 8, 14 d. 12, 6, 7