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Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
4. Constructing Polygons
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Exercise 25 Page 387

Use a protractor to draw the given angle.

Many, see solution.

Practice makes perfect
We want to determine whether we can construct one, many, or no triangle(s) with one angle measure of 60^(∘) and one side length of 4 centimeters. We can begin by drawing an angle of 60^(∘) using a protractor. Let's call the vertex of this angle A.
Angle of 60 degrees

Next, we can use a ruler to mark 4 centimeters on one of the rays! We can do so using a ruler.

Mark 4 centimeters on one ray

Notice that the third vertex of our triangle can be marked on the other ray at any distance from vertex A. This means that we can construct many triangles with the given description.

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arrow_right Try It p.382-384
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Try It 3 (Page 382)
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arrow_right Self-Assessment for Concept & Skills p.384
Self-Assessment for Concept & Skills 10 (Page 384)
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arrow_right Self-Assessment for Problem Solving p.385
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arrow_right Review & Refresh p.386
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arrow_right Concept, Skills, & Problem Solving p.386-388
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