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In the rhombus ABCD diagonal DB is congruent to side AD what is the measure of angle A
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In the rhombus ABCD diagonal DB is congruent to side AD what is the measure of angle A

User Sifriday
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All sides of a rhombus are equal ⇒ AD = AB

AD = AB and AD = DB ⇒ AD = AB = DB ⇒ ΔABD is equilateral ⇒∠A = 60°
User Avitenberg
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