Question

In a quadrilateral abcd angle a=100 degree, angle b=105 degree and angle c=70 degree find angle d

Answer 1

$a + b + c + d = 360$

100+105+70+d=360

275+d=360

d=360-275

d=85

Answer 2

Answer:

85 degree

Step-by-step explanation:

All sides of Quadrilateral = 360 degree

So, 100 + 105 + 70 + angle D = 360 degree
275 + angle D = 360 degree
360 - 275 = 85 degree

So, our answer is 85 degree