Question

If three angles of a quadrilateral are each equal to 75, than find the fourth angle

Answer 1

Answer:

Step-by-step explanation:

Let the vertices of quadrilateral are A,B,C and D , so an(A)+an(B) an(C)+(D)=360° angle A,Band Care equal so 3×75+an(D)=360°. an(D)=360-75×3=360-225=135°