Question

in a quadrilateral abcd if angle=60°and angle b:c:d are 2:3:7find angle d is​

Answer 1

Angle a=60°

Let angle b,c,d be 2x,3x,7x respectively.

Sum of all angles of a quadrilateral=360°

60+2x+3x+7x=360

12x=360-60

x=300/12

x=25

Angle d = 7x

=7x25

=175°

Answer 2

Answer:

let angle B C & D be 2x,3x,7x simultaneously

sum of all angles of quadrilateral is 360°

<A+<B+<C+<D=360°

60°+2x+3x+7x=360

12x=300°

x=300/12

x=25°

<A=60°

<B=50°

<C=75°

<D=175°