Question

ABCD is a rhombus if angle ABC= 40 degrees find angle ADB

Answer 1

In rhombus angle A +angle B +angle C +angle D=360degree

And in rhombus opposite angles are equal

》Angle B=angle D=40°

》angle A+80°+angle C=360°

》2angle A=280》angle A=Angle D=140°

》angle ADB=140/2=70°*

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