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are opposite sides of isosceles triangle equal are opposite angles of isosceles triangle equal prove that opposite sides of isosceles triangle are equal angle opposite to equal sides of isosceles triangle are equal angle opposite to equal sides of isosceles triangle are equal prove angel opposite to equal sides of an isosceles triangle are equal angles opposite to equal sides of an isosceles triangle are equal proof angles opposite to equal sides of an isosceles triangle are equal theorem angles opposite to equal sides of an isosceles triangle are equal true or false angles opposite to equal sides of an isosceles triangle are equal explain
