What is the probability that your friend will throw a rock

Which statement justifies why angle ebc measures 90?

In an improper fraction, is the numerator equal to, less than, or greater than the denominator

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.