Question

the three angles of a quadrilateral are 70°, 85°and 100°, find the fourt angle​

Answer 1

Answer:

105° is the fourth angle.

Step-by-Step Explanation;

Let the fourth angle be x

Therefore,

70° + 85° + 100° + x = 360°

x = 360° - 255°

x = 105°

I hope you find it useful... If you have any query do comment, I will try to solve it...

Answer 2

Answer:

The fourth angle = 105°  

Step-by-step explanation:

The three angles of a quadrilateral are = 70°, 85°and 100°

As we know,

Sum of all angles of a quadrilateral = 360°

So, let the fourth angle be x

70° + 85° + 100° + x = 360°

255° + x = 360°

x = 360° - 255°

x = 105°

∴ The fourth angle = 105°

Hope it will help you

Please mark me as BRAINLIEST