A. Adjacent angles
B. Complementary angles
C. Supplementary angles
D. Vertical angles

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

Can (3,5 and square root 34) be sides on a right triangle?

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?