Find the measures of the sides of DEF then classify by its sides D(-2,3), E(5,5), F(-4,10)

∆DEF is an isosceles ∆

Step-by-step explanation:

To find the 3 side lengths of ∆DEF, use the distance formula, which is given as .

Distance between D(-2, 3) and E(5, 5):

(nearest tenth)

Distance between E(5, 5) and F(-4, 10):

(nearest tenth)

Distance between F(-4, 10) and D(-2, 3):

(nearest tenth)

∆DEF has two equal sides, DE and FD. Therefore, ∆DEF can be classified as an isosceles triangle.

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step-by-step explanation:

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