Using Trig to find the AREA and PERIMETER of REGULAR polygons.
1.) Given: Regular Pentagon PENTA w/OA = 10.
Find: Perimeter and Area.
2.) Given: Regular Octagon ABCDEFGH w/ AH=8.
Find: Perimeter and Area.
N
E
D
T
E
C
F
O
O
B
G
P
A
A
H
DEAL OR NO DEAL!!
1.
2.
9
x°
x
6
8
38°
3. Calculate the area of the Regular Pentagon
ABCDE. C
B
4.
D
6
F
9 cm
8
x°
E
A
5.
6.
10
78°
x
3 3
7. How high above the ground is the kite?
120 m
50°
h
x°
28
8. A 10 foot ladder rests against the side of a building.
If the foot of the ladder is 4 feet from the building,
find, to the nearest degree, the angle the ladder makes
with the ground.