1. PolyGon Warmup
4/12/16

2. 1.What is the value of x?
The sum of the exterior angles of any polygon is 360 degrees so:
2x + 70+x+80+2x+3x = 360
8x = 360
8x = 210
x = degrees

3. 2. What is the sum of the interior angles of pentagon. 3
2. What is the sum of the interior angles of pentagon? 3. What is the sum of the interior angles of hexagon?
degrees
Remember: 180 times (number of sides minus 2)
180 x (5-2) or 180 x 3 = 540
720 degrees
180 (6 – 2) or 180 x 4 = 720

4. Make sure you know this:

5. 4. ABCD is a parallelogram. Find the positive value of x:
Diagonals of a parallelogram bisect each other so 4x2 + 5 = 41
x = 3 or -3
The positive value was requested so x = 3

6. 5. If the radius of the circle is 5 cm
5. If the radius of the circle is 5 cm., what is the perimeter of the hexagon?
Radius = length of one side of hexagon
Hexagon has 6 sides
5 times 6 = 30
Perimeter of hexagon is 30 cm