Area Regular Octagons.notebook
March 09, 2016
class 11:15 am to 12:55 pm
lunch from 12:09 pm to 12:33 pm
Intro to Geom for Wednesday 3/9/16 1) hand back papers
2) give packets for today's lesson
Area of Regular Octagons #118N Notes
3) Assign #118A worksheet
4) get caught up on missing work!!
Area Regular Octagons.notebook
March 09, 2016
Area of Regular Octagons
Formula: A = 1 a p
2
A = ________________________
a = __________________ (distance from the _____________ and ____________ to a ____________)
p = ________________________
where n = __________ of ____________
and s = ___________ of ___________ _________
Area Regular Octagons.notebook
March 09, 2016
ex 1 Find the area of the regular octagon.
24 cm
s = _____
n = _____
a = _____
28 cm
p = _____
Area Regular Octagons.notebook
March 09, 2016
ex 2 Find the area of the regular octagon.
96 in
s = _____
n = _____
a = _____
116 in
p = _____
Area Regular Octagons.notebook
March 09, 2016
ex 3 Find the area of the regular octagon.
s = _____
n = _____
a = _____
14 in
p = _____
12 in
Area Regular Octagons.notebook
March 09, 2016
ex 4 Find the area of the regular octagon.
8 yd
s = _____
n = _____
a = _____
9 yd
p = _____
Area Regular Octagons.notebook
March 09, 2016
ex 5 Find the area of the regular octagon.
38 mm
32 mm
Area Regular Octagons.notebook
March 09, 2016
ex 6 Find the area of the regular octagon.
26 ft
31 ft Area Regular Octagons.notebook
March 09, 2016
ex 7 Find the exact area of the triangle. Show all work and formula
and label answer
18
30o
Area Regular Octagons.notebook
March 09, 2016
ex 8 Find the area of the isosceles trapezoid. Show all
work and formula. Label answer.
19
yds
12 2
yds
45
o
Area Regular Octagons.notebook
ex 9 Find the area of the kite. Show all work and formula. Code. Label answer.
26 in
24
30 in
March 09, 2016
Area Regular Octagons.notebook
ex 10 Find the area of the square. Code the picture. Show all work and label answer.
18 7
ft
March 09, 2016
Area Regular Octagons.notebook
ex 11 Find the area of the enclosed shape. Show all work
and all formulas. Label answer!
March 09, 2016
Area Regular Octagons.notebook
March 09, 2016