Question

The vertices of DEF are D(7,3)E(4,-3)F(10,-3) then write a paragraph proof that DEF is isosceles

Answer 1

Answer:

Step-by-step explanation:

DE² = (7-4)²+(3-(-3))²= 3²+6²=9+36=45

DF² = (7-10)²+(3-(-3))² = 3²+6²=9+36=45

So DE = DF

∴ The triangle is isosceles