3 years ago

HElp?????????????????????????????????????????

Mathematics

1 answer:

Tasya [4]3 years ago

7 0

Answer:

Option 4

Step-by-step explanation:

=> The length of DE = EF will prove that DEF is an isosceles triangle (having two sides equal)

=> Their slopes being the opposite reciprocals will prove that they are perpendicular to eachother and DEF is a right angled triangle.

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