Question

ABCD is a quadrilateral with angle A equal to 80 degree angle B equal to 40 degree angle c equal to 180 degree angle equal to 100 degree​

Answer 1

Answer:

angle D is 60 degree.

Step-by-step explanation:

since sum of all angle of quadrilateral is 360 degree .

here three angles are given that is angle A is 80 degree,angle B is 40 degree ,angle C is 180 degree so other one will be 360-300 =60

therefore,angle D is 360 degree.