Answer:

Step-by-step explanation:
<u>Use the formula:</u>

<u>Plug in the numbers (coordinates) given, like so:</u>


<u>Simplify:</u>
<u />
B. Triangle B and Triangle D
Triangle A has all equal sides and Triangle C is a right triangle.
3x -4 (5 - x) = 7x -20
3x-20+4x=7x-20
7x-20=7x-20
Answer:
A
Step-by-step explanation:
O because that is the number that you always start off.