Question

Find the perimeter of the triangle to the nearest unit A(-2,3) B(2,1) C(-2,1)​

Answer 1

10 units

Explanation:

We can find the length of the hypotenuse of this right triangle using the Pythagorean theorem.

AB² = AC² +BC²

AB² = 2² +4² = 20

AB = √20 ≈ 4.47

Then the perimeter is ...

P = AB +BC +CA = 4.47 +4 +2 = 10.47

P ≈ 10 units