Question

hiii answer my question

(a)in a quadelateral ABCD A =120° B=60° C=90° find D)
in a quadelateral ABCD B=C=D=90° find A☺☺☺☺​

Answer 1

A) 120°+60°+90°+D=360°

270°+D=360°

D=360°-270°

D=90°

Your answer is 90°.....

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Answer 2

Answer: i) D=90°

ii) A=90°

Step-by-step explanation:

First , we know that the sum of angles of quadrilateral is always 360°

Now,

i) In quadrilateral ABCD ,on adding all the angles...

A°+B°+C°+D°=360°

120°+60°+90°+D°=360°

270°+D°=360°

On taking angle D on side and constants one side...

D°=90° answer

ii) In quadrilateral ABCD , on adding all the angles...

A°+B°+C°+D°=360°

A°+90°+90°+90°=360°

A°+270°=360°

On taking angle A on one side and constants one side...

A°=90° answer

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