3 years ago

The vertices of are D(7, 3), E(4, -3), and F(10, -3). Write a proof to prove that is isosceles.

1 answer:

nataly862011 [7]3 years ago

6 0

<span>The vertices of are D(7, 3), E(4, -3), and F(10, -3)

Prove tat DE = DF
Length of a segment = </span>√[(x₂ - x₁) +(y₂ -y₁)]

DE = √([4-7)² + (-3 -3)²] = √45 = 3√5
DF = √[(10-7)² +(-3 -3)²] = √45 b= 3√5
Hence DE = DF = 3√5 and DEF is ISOSCELES

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