Question

What is the value of n?

Answer 1

85°

To get this,know that the total angle of triangle is 180°[(n-2)180] n=number of sides.Total angle on a straight line is 180°.

There are 3 angle you need to calculate.

Upper angle:180-133=47°

Right angle:180-142=38°

Left angle:180°-47°-38°=95°

n+95°=180°

n=180°-95°=85°