# To find the value angle

• August 13th 2010, 12:04 AM
alanpaul
To find the value angle
What is the value of the shaded angle in shape A?. Please find attachemet to get shade.
• August 13th 2010, 12:10 AM
Prove It
Angles in a circle add up to $360^{\circ}$.
• August 13th 2010, 01:44 AM
DavidM
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.