Question

three angles of a quadrilateral 56 degree 115 degree and 84 degree find the fourth angle

Answer 1

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Answer 2

Answer: 105

Step-by-step explanation:

<A=56 , <B=115 , <C=84 , <D=?

As sum of all angles of a quadrilateral is 360, then,

or,  <A + <B + <C + <D = 360

or,  56 + 115 + 84 + <D =360

or,  255 + <D = 360

or,  <D =360 - 255

or,  <D = 105