
Scale Drawings
Presentation
•
Mathematics
•
6th Grade
•
Medium
+2
Standards-aligned
Kevvin Hankins
Used 83+ times
FREE Resource
14 Slides • 12 Questions
1
Scale Drawings
By Kevvin Hankins
2
Scale Factors and Scale drawings

3
Introduction
What do you notice about the drawing of the horse compared to the actual horse?
What questions do you have about the two versions?
4
5
Scale Drawings

6
7
Introduction
What do you notice about the drawing of the horse compared to the actual horse?
What questions do you have about the two versions?
8
9
10
Multiple Choice
ΔPQR is similar to ΔSTU What side corresponds to side UT?
PQ
RQ
QR
QP
11
Multiple Choice
What change was made to the actual horse?
Exact Copy
Reduction
Enlargement
12
Multiple Choice
Scale Factor is a ratio comparing:
the new value to the original value
the original value to the new value
13
Scale drawing
In order for an original drawing to be reduced or enlarged, every corresponding side must be PROPORTIONAL to the original measurements.
We use MULTIPLICATION to make things bigger or smaller.
14
15
Multiple Select
Which pairs of corresponding sides are proportional?
The bottom of each shape because 4 times 3 is 12
The right side of each shape because 4 times 3 is 12
The left side of each shape because 4 times 3 is 12
The slanted line on the left because 2.2 times 3 is 6.6.
The slanted line on the right because 2.2 times 3 is 6.6
16
17
Multiple Choice
How is Figure F reduced to Figure B?
Multiply each side by 1/2
Multiply each side by 1/3
Multiply each side by 1/4
Multiply each side by 1/5
18
19
Fill in the Blanks
Type answer...
20
Multiple Choice
Triangle PQR is shown. Its original lengths are multiplied by 2.5. What are the new side lengths of P’Q’R’?
PQ: 20, RQ: 42.5, RP: 37.5
PQ: 16, RQ: 34, RP: 30
PQ:4, RQ:8.5, RP: 7.5
21
Multiple Choice
Which copies are scale drawings when compared to the original triangle?
1, 2, and 3
1 and 2
2 and 3
1
2
22
Multiple Choice
Rectangle ABCD has been enlarged to form rectangle A’B’C’D’. What is the scale factor?
2
2.5
3
3.5
23
Open Ended
Explain why Copy 3 is NOT a scale drawing of the original triangle.
24
Reminder: You have independent practice
1. Classifying Triangles
2. Intro to Scale Factors
25
Open Ended
Is Figure B an enlargement of Figure A? Explain why or why not.
26
Open Ended
Exit Ticket: Triangle PRQ was enlarged to form triangle SUT. What is the scale factor?
Scale Drawings
By Kevvin Hankins
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