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Core Connections Integrated II, 2015 View details

1. Section 7.1

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Exercise 55 Page 391

Use a protractor.

Practice makes perfect

Let's plot the given point in a coordinate plane.

To rotate the point counterclockwise about the origin, we first have to draw a segment from the point to the origin. Using a protractor, we measure a 90^(∘) angle counterclockwise and then draw a second segment of the same length as the first. At the end of this segment we find the rotated point.

The rotated point has the coordinates (- 5,- 2), which corresponds to option D.

Subchapter links

7.1.1 Explore–Conjecture–Prove p.376-379

7.1.2 Properties of Rhombi p.382-383

7.1.3 Two-Column Proofs p.387-388

7.1.4 More Geometric Proofs p.390-391

7.1.5 Using Similar Triangles to Prove Theorems p.395-396

Exercise 55 Page 391

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