Scale Drawings
What are scaled drawings?
Same angles, sides are scaled by the same number.
What letter represents the Radius?
R
Fill the ?
x y
1 9
4 36
10 ?
90
2 + -91/2 = ?
-7 1/2
What is Mr. Leiting's favorite Football team?
Philadelphia Eagles
What happens when you have a scale copy of 2?
How do you find the Circumference?
C = 2 x R x 3.14
C = D x 3.14
What is the ?
x y
2 10
? 15
10 50
3
-2 - 8= ?
-10
What is Mr. Leiting's daughter's name?
Norah
What happens to the length if you have a scale factor of 1/2?
Side length is half the original length.
How do you find the area of a circle?
A = R2 x 3.14
Is the chart Proportional? Why
x y
0 10
10 20
33 43
No. Just adding 10. Needs to have a Constant of Proportionality.
2 1/2 + 4.25 = ?
6.75 or 6 3/4
How many years has Mr. Leiting been teaching?
2 years.
Your original side length is 10. Your new side length is 25. What is the scale factor?
2.5
Find the circumference.
R=2
Use 3.14 for pi
12.56
What is the constant of proportionality? y= ?
x y
5 10
7 14
10 20
y = 2 x X
-2 x 8 = ?
-16
What College did Mr. Leiting go to?
UNI
The original side length is 8. What is the new side length after you scale it by 1/4?
2
Find the Area:
R= 3
Use 3.14 for pi
28.26
What is the constant of proportionality? y= ?
x y
4 10
10 25
18 45
y = 2.5 x X
-5 x -12 = ?
60
How many siblings does Mr. Leiting have?
One brother