Which of the following are necessary when proving that the opposite angles of a parallelogram are congruent?
check all that apply.
a. corresponding parts of similar triangles are similar.
b. angle addition postulate.
c. segment addition postulate.
d. corresponding parts of congruent triangles are congruent.

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x