An isosceles triangle is a triangle with two equal sides. The following theorem holds: If  is a triangle with two equal angles, then is an isosceles triangle.(a) What is the hypothesis?(b) Show by providing a counterexample that the hypothesis is necessary.(c) What is the contrapositive?(d) What is the converse? Is it true?

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An isosceles triangle is a triangle with two equal sides. The following theorem holds: If  is a triangle with two equal angles, then 
is an isosceles triangle.
(a) What is the hypothesis?
(b) Show by providing a counterexample that the hypothesis is necessary.
(c) What is the contrapositive?
(d) What is the converse? Is it true?

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