To find the interior angle, you use the formula ((n - 2) x 180) / n (where n is the number of sides).
So, ((20 - 2) x 180) / 20 = 162
To find the exterior angle, you merely take away the interior angle from 180.
180 - 162 = 18, so the exterior angle is 18 degrees
Another, easier, way is to just divide 360 by n. All exterior angles always add to 360. Thus, 360 / 20 = 18 degrees
Answer:
An angle showing a turn through 1/8 of a circle is smaller
Step-by-step explanation:
we know that
A complete circle represent 360°
so
<em>An angle showing a turn through 1/8 of a circle is</em>

<em>An angle showing a turn through 1/3 of a circle is</em>

therefore
An angle showing a turn through 1/8 of a circle is smaller
Answer:

Step-by-step explanation:
The given parabola has its focus at (-5,-5) and the directrix is at: y=7.
The equation of such parabola is given by the formula:

The vertex of the parabola is the midpoint of (-5,-5) and (-5,7).

The value of p is the distance from the (-5,-5) to (-5,1).
p=|1--5|=6
We substitute the values of the vertex and p into the equation to get;


Or

Answer:
432
Step-by-step explanation:
Subtract 515 from 947
Answer:
339, 340, 341
Step-by-step explanation:
To find the 3 consecutive numbers, divide the sum by 3 to get the average. 1020/3=340. So the middle number is 340. That means the numbers are 339, 340, and 341.