Question

in the adjoining figure ABCD is a rhombus

* want a qualitative answer

Answer 1

HEY HERE IS YOUR ANSWER

<BAC+<CAD= 180°

40°+<CAD= 180°

<CAD= 180-40= 140°

<CAD=<ACB (ALTERNATE INTERIOR ANGLES)

<BAC+<ACB+<ABC= 180°(ANGLE SUM PROPERTY)

40°+140 +<ABC=180°

180°+<ABC = 180°

<ABC=180°-180°

<ABC=0°

<ACB+<ACD=180°(LINEAR PAIR)

140+<ACD= 180°

<ACD=180-140=40°

<ADC+<CAD+<ACD=180°(ANGLE SUM PROPERTY)

40°+140°+<ADC=180

180°+<ADC=180°

<ADC=180-180=0°

HOPE THIS HELPS

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#BE BRANLY