# Math Help - To find the value angle

1. ## To find the value angle

What is the value of the shaded angle in shape A?. Please find attachemet to get shade.

2. Angles in a circle add up to $360^{\circ}$.

3. For B:
All angles at a point add to 360. Assuming all sides are equal, B is divided into 4 equal parts.

$\frac{360^{\circ}}{4} = 90^{\circ}$

The rest of them are similar.