Question

distance
20. The three angles of a quadrilateral ABCD are given as angle A =65°,angle B=130° ,angle C =45°,find the measure of angle D.​

Answer 1

Answer:

Angle D= 120

hope it is right

Answer 2

let us

$a = 65 \: \: \: \: b = 130 \: \: \: \: c = 45 \: \: d = x$

we know that

$a + b + c + d = 360$

substitute the value of a,b,c,and d we have

$65 + 130 + 45 + x = 360$

$240 + x = 360$

$x = 360 - 240$

$x = 120$

fourth angle is 120