Exercise
Form 11: Scale Drawings and Scale Factors
Work with scale drawings and scale factors to create or interpret proportional triangle representations. Apply scale ratios to analyze side lengths and dimensions.
Questions
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MultiChoice
A scale drawing of a triangle uses a scale factor of 1 cm : 5 m. If the actual sides are 15 m, 20 m, and 25 m, what are the side lengths on the drawing?
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MultiChoice
How do the angle measures of a scale drawing compare to the actual triangle's angle measures?
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MultiChoice
If a triangle with sides 6 cm, 8 cm, 10 cm is enlarged by a scale factor of 3, what are the new side lengths?
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MultiChoice
A student draws a triangle with side lengths 4 cm, 5 cm, and 6 cm. Another student uses a scale factor of 2 to draw a scaled triangle. Are the two triangles similar?
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MultiChoice
On a map with scale 1 inch : 10 miles, a triangular park has sides measuring 2 inches, 3 inches, and 4 inches. What is the actual perimeter of the park?
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MultiChoice
If an original triangle has angles 40°, 60°, 80° and side lengths reduced by a scale factor of 0.5, what are the new angles?
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MultiChoice
Why do scale drawings preserve shape when constructing triangles?
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MultiChoice
A blueprint shows a triangular roof truss with sides 5 cm, 5 cm, and 8 cm. If the scale is 1 cm = 2 meters, what is the actual base length of the truss?
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MultiChoice
If a triangle is constructed with sides 3 cm, 4 cm, 5 cm and another with sides 6 cm, 8 cm, 10 cm, what is the scale factor from the smaller to the larger triangle?
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MultiChoice
Can a scale drawing of a triangle fail the Triangle Inequality Theorem if the original triangle satisfies it?
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MultiChoice
If actual triangle sides are 12 m, 16 m, 20 m and scale is 1 cm : 4 m, what is the perimeter of the scale triangle?
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MultiChoice
When recreating a triangle using a scale factor of 1.5, a side measuring 10 cm becomes: