Question

15 points, plz help!!

What is the area of a triangle whose vertices are D(3, 3), E(3, −1), and F(−2, −5)?

Enter your answer in the box.
___units²

Use the formula = 1/2b x h

Answer 1

The answer to your question is 10 units ²

Explanation:

To solve this problem I will use the formula

3 3

A = 1/2 3 -1 = 1/2 [ (3 x -1) + (3 x -5) + (-2 x 3) - (3 x -5) - (-2 x -1)

-2 -5 -(3 x 3)]

3 3 = 1/2 [ -3 - 15 - 6 + 15 - 2 - 9]

= 1/2 [ -20]

= 1/2|20|

= 10 units²

Sorry, I don't remember how to use the formula 1/2 b x h