How can you prove a triangle is isosceles?

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

One integer is 8 times another. if the product is 72, then find the integers

Which best explains why this triangle is or is not a right triangle ?