Question

The three angles of a quardilateral are 54,97and 86 degree .Find the fourth angle​

Answer 1

Answer:

123

Step-by-step explanation:

Sum of angles of any quadrilateral is 360

let fourth angle - x

54+97+86+x = 360

237+x=360

x=360-237

x= 123

Answer 2

GIVEN:abcd is a quadrilateral in which ^A=54°

^B=97°

^C=86°

^D=?

TO FIND:^D

PROOF:^A+^B+^C+^D=360

[sum of all angles of quadrilateral]

= 54°+97°+86°+^D=360°

= 237+^D=360°

= ^D=360°-237°

=^D=123°

Therefore ^D=123°

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