A=25m2, b= _, h= 5/6m

Area of a triangle = 1/2 x b x h

25 = 1/2 x b x 5/6

Divide both sides by1/2

50 = b x 5/6

Divide both sides by 5/6

b = 60m

-18 degrees is the answer : )

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.