Question

three angles of a quadrilateral are 100 degree, 90degree and 110degree what is the fourth angle
options are:
a) 30degree
b)120 degree
c)160degree
d)60 degree​

Answer 1

Answer:

60°

Step-by-step explanation:

100+90+110+x=360

300+x=360

x=360-300

x=60

Answer 2

☆ Solution ☆

Given :-

• Three angles of a quadrilateral are 100 degree, 90 degree and 110 degree.

To Find :-

• What is the fourth angle ?

Step-by-Step-Explaination :-

Let the fourth angle be x

Now,

As we know that :-

Sum of all sides of Quardilateral is 360° .

So,

100° + 90° + 110° + x = 360°

300° + x = 360°

x = 360° - 300°

x = 60°

Hence,

Option d) 60 degree is correct option.