Question

Please help me.

What is

Answer 1

There's no m so I'm assuming you meant b.

The angle of b is 121

Explanation:

The shape here is a heptagon. The formula for calculating the sum of interior angles is ( n − 2 ) × 180. *n represents the number of sides.

(7-2) × 180 There are 7 sides so plug that in.

(5) × 180 = 900 This means the shape's interior angles add up to 900.

Now, all we have to do is add up all the sides known and set it equal to 900.

c + d + e + f + g + a = 900

148 + 90 + 142 + 130 + 139 + 130 + b = 900

779 + b = 900

now subtract 779 from both sides to isolate b.

b = 121

Answer 2

90

Explanation:

The symbol represented in the angle is the right angle symbol ∟

This means that the angle would be 90

Have a lovely day :)