Interior angle
I guess 13 angle shape
Extend any straight side of a shape. The angle made by that side with the adjacent side of the shape is an exterior angle. Its value is 180 degrees less the interior angle.
If each angle is 90 degrees the shape is called a square.
The size of the angle would depend on the shape and number of sides the polygon has. It is called the exterior angle.
there is no shape with 2 sides. it is an angle.
a c angle
An obtuse angle.
7 side angle
an Octagon
It is called a Nonagon
The side of a triangle that is opposite to 90 degree angle is called hypotenuse. The side that is opposite to the given angle (The angle that is under calculations) is called opposite. The side that is adjacent with the given angle is called base.
The side of the triangle next to the angle is called the adjacent side.