Question

1. Find the length of a diagonal of a rectangle ABCD with vertices, A (-3,1), B(-1,3), C(3,-1) and D (1,-3).

A) 5.7
B) 6.3
C) 3.2
D) 4.5

Hello! I don't understand how to solve this question since the unit I just read barely went over this. If anyone could help that would be great. Thank you so much!

Answer 1

make a sketch !!!

a diagonal would for example be from B to D
change in x = 1 - -1 = 2
change in y = -3 - +3 = -6
sqrt (2^2+6^2) = sqrt 40
= 2 sqrt 10

Answer 2

the answer is 6.3

Answer 3

anyone have the answers to the entire test...

Answer 4

Geometry A semester exam:

#1: When the net is folded into the pentagonal prism shown beside it, which letter will be on the bottom left side if A is facing frontward, G is top right, and F is bottom right?
Answer: D will be on the bottom left

#2: How are <1 and <2 related?
Answer: A- they are supplementary

#3: Find the midpoint of PQ
Answer: (3,2)

#4: Find the length of a diagonal of a rectangle ABCD with vertices A (-3, 1), B (-1, 3), C(3, -1), and D (1,-3).
Answer: 6.3

#5: What is the inverse of the following conditional?
Answer: If n is not even, then n is not the sum of two even numbers.

Hope this helps:)