1. 6.3 Similar Figure Scale Drawings
December 02, 2013
Solve. Round to the
nearest tenth if necessary.
=
f
21
=
4
1.
2
3
15
p
2. 9
Bellwork
Objective: use similar figures and scale drawings
Jan 30­3:01 PM
HW pg. 297 #4­26 evens
1

2. 6.3 Similar Figure Scale Drawings
December 02, 2013
Similar Figures ­ have the same shape, but not necessarily the same size.
Similar figures have corresponding angles and corresponding sides.
The symbol ~ means is similar to. In this example. ABC ~ ΔXYZ
Δ
53o
6
10
37o
53o
8
9
15
12
37o
Jan 30­3:03 PM
HW pg. 297 #4­26 evens
2

3. 6.3 Similar Figure Scale Drawings
December 02, 2013
Corresponding angles have equal measurements
Corresponding sides are in proportion.
Parallelogram ABCD ~ parallelogram EFGH. Find the value of x.
A 16
B
x
D
C
E
24
F
18
H
G
Jan 30­3:31 PM
HW pg. 297 #4­26 evens
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4. 6.3 Similar Figure Scale Drawings
December 02, 2013
A tree casts a shadow 10 ft long. A 5 ft women casts a shadow 4 ft long.
The triangle shown for the woman and her shadow is similar to the triangle
shown for the tree and its shadow. How tall is the tree?
Jan 30­3:37 PM
HW pg. 297 #4­26 evens
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5. 6.3 Similar Figure Scale Drawings
December 02, 2013
A scale drawing ­ is an enlarged or reduced drawing that is similar to an actual object or place.
The ratio of a distance in the drawing to the corresponding actual distance
is the scale of the drawing.
The scale on a map is 1 in : 40 mi. The distance from Atlanta to Macon is about 75 mi.
What is the approximate map distance between these two cities?
Jan 30­3:41 PM
HW pg. 297 #4­26 evens
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6. 6.3 Similar Figure Scale Drawings
December 02, 2013
HW pg 297 # 4 ­ 26 evens
Jan 30­3:44 PM
HW pg. 297 #4­26 evens
6