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  • ABCD is a rhombus, then the measure of ∠ CDB is

ABCD is a rhombus, then the measure of ∠ CDB is

Option: 1

30°


Option: 2

60°


Option: 3

55°


Option: 4

70°


Answers (1)

best_answer

We have ∠ A = ∠ C = 60° (opposite angle of parallelogram are equal)

Let, ∠ CDB = x

In triangle CDB we have

CD = BC (side of rhombus are equal) 

So, ∠ CDB = ∠ DBC = x

therefore, ∠ CDB + ∠ DBC +  60° =  180°

2x =  120°

x =  60°

∠ CDB = 60°

 

Posted by

Pankaj Sanodiya

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