Question

What is the perimeter of a rectangle whose vertices are (2,7) (8,7) (211) (8,11)?

A) 24
b) 12
c)32
d) 40
e) 20

Answer 1

e) 20

Explanation:

Segment lengths:

|(2, 7) -> (8, 7)| = |(8-2, 7-7)| = |(6, 0)| = 6

|(8, 7) -? (8, 11)| = |(8-8, 11-7)| = |(0, 4)| = 4

because we know it's a rectangle, we can infer that the other two sides also have lengths 4 and 6, so the perimeter is 4+4+6+6=20