1. prove: cbf ≅ edf using isometric (rigid) transformations.
outline the necessary transformations to prove cbf edf using a paragraph proof. be sure to name specific sides or angles used in the transformation and any congruency statements.

2. the congruency of mno and xyz can be proven using a reflection across the line bisecting . however, this congruency can also be proven using geometric postulates, theorems, and oz definitions. prove that the triangles are congruent using a two-column proof and triangle congruency theorems.

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

The polynomial 10x3 + 35x2 - 4x - 14 is factored by grouping. 10x3 + 35x2 - 4x - 14 5x )-20 what is the common factor that is missing from both sets of parentheses?