Question

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

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Answer 1

The base length is 3 - (-1) = 4 units (vertical side DE).

The height is 3 - (-2) = 5 units (horizontal segment from F to the intersection with vertical segment DE).

The area of the triangle is (
`(1)/(2)`)*5*4 = 10 square units.