The corner of a shape where two side meet
9514 1404 393
Answer:
C. 168°
Step-by-step explanation:
The exterior angle at any vertex of an n-gon will be ...
360°/n
So a 30-gon will have exterior angles of ...
360°/30 = 12°
The adjacent interior angle is supplementary to this, so is ...
180° -12° = 168°
_____
<em>Using the reasonableness test</em>
You know that the interior angles of a square are 90°, and that regular polygons with more sides have larger interior angles. The most any regular polygon's interior angle can be is 180°. The only answer choice between 90° and 180° is the correct choice: 168°.
229-133 = -y
96/-1 = -y/-1
-96 = y

------------------------------------------------------------------------
Change the divide fraction to multiplication fraction :
------------------------------------------------------------------------

------------------------------------------------------------------------
Combine into single fraction :
------------------------------------------------------------------------

------------------------------------------------------------------------
Reduce to simplest form :
------------------------------------------------------------------------
The answer is 7. So you would do
2(3)2=12
4(3)=12
12-12=0
0+7
7