2points
a telemarketer earns a fixed amount for each call that he makes, as shown in
the graph below.
amount earned (dollars)
43
number of calls made
if the telemarketer makes 12 calls, how much will he earn in total?
o a $0.80
b. $9.60

Given: abcd is a square. prove: ac ? bd. we are given that abcd is a square. if we consider triangle aeb and triangle aed, we see that side is congruent to side ad because sides of a square are congruent. we know that side ae is congruent to side ae by using the . finally, we know that side de is congruent to side because the diagonals of a square bisect each other. therefore, triangle aeb is congruent to triangle aed by congruency. we see that angle aed and angle aeb are a linear pair, and congruent by cpctc. thus, the measure of these angles will be 90°, and diagonal ac is perpendicular to diagonal bd by the .