Question

In the adjoining figure, figure out the number of
angles formed within the arms OA and OE.
​

Answer 1

Figure out the number of

igure out the number ofangles formed within the arms OA and OE.

Answer: 10 angles

There are four angle inside an angle :

so total angles = 4 + 3 + 2 + 1 = 10 angles

The angles are:

1. ∠EOD
2. ∠DOC
3. ∠COB
4. ∠BOA
5. ∠EOC
6. ∠DOB
7. ∠COA
8. ∠EOB
9. ∠DOA
10. ∠EOA

More:

An angle is a fraction of circle, So its measure is in between 0-360°. We could donate an angle by this symbol - ∠.

How to write? We write angle like this if vertex is B : ∠ABC or ∠CBA

Note that we have to the vertex in middle. Else it will not donate the same angle.