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Similarity, Proportion, and Triangle Proofs: Mastery Test
5
Select the correct answer.
Glven: AABC with DEAC
AD CE
Prove: DB = EB
А
D
B
E
С
Statement
Reason

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

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.

What is perpendicular to y=-1/2x+11