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Question
ABCD is a rhombus. If <ACB is 40 degree ,find <ADB.
ABCD is a rhombus. If <ACB is 40 degree ,find <ADB.
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Solution
Rhombus is a parallelogram.
So, the sum of adjacent angles is 180.
<ACB+<ACD =180
<ADB = 180-40
= 140
So, the sum of adjacent angles is 180.
<ACB+<ACD =180
<ADB = 180-40
= 140
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