Use the following problem to answer the question below:
given: m∠abe = m∠cbd prove: m∠abd = m∠cbe

what is the reason for a, b, c and d?

these are my guesses but i don't know if im right:
a: given
b: transitive property
c: additive property of equality
d: subtraction property of equality

Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $40.00, how much money is angela saving on the dress? a. $0.80 b. $3.20 c. $32.00 d. $8.00

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer