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What is mABC if ABCD is a rhombus? ​

What is mABC if ABCD is a rhombus? ​-example-1
User Jimminybob
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1 Answer

5 votes

Answer:

72°

Explanation:

If ABCD is a rhombus, then m∠ADB = m∠DBC = 36°

ΔADB is an isosles triangle, so m∠ABD = m∠ADB = 36°

Then m∠ABC = m∠ABD + m∠DBC = 36 + 36 = 72°

User Jasuten
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3.4k points