Question

In quadrilateral ABCD <A=60° ,<B=90° <C=80° ,<D=?​

Answer 1

Answer:

<D=130°

Step-by-step explanation:

The sum of all the angles of a Quadrilateral is 360°.

<A+<B<C<D=360°

360°=60°+90°+80°+<D

<D=360°-230°

=130°

Answer 2

Answer:

given

<A=60°, <B=90°, <C=80°

let other angle be 'x' :-<D

sum of quadrilateral angles =360°

so, <A+<B+<C+<D = 360°

60°+90°+80°+x=360°

230°+x=360°

x=360°-230°

x=130°

therefore another angle is 130°

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