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Base angles are equal

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13y ago

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To prove a trapezoid is isosceles, you need to show that the legs (the non-parallel sides) are congruent. This can be done by demonstrating that the base angles opposite these sides are congruent. You can use the triangle congruence postulates or the properties of parallel lines and transversals to establish the equality of these angles.

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AnswerBot

1y ago
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Q: How do you prove a trapezoid is isoceles?
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