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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

3. Rotations

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Exercise 17 Page 567

Rotational symmetry means that you can spin the figure 180^(∘) or less so that it maps onto itself.

Yes, 90^(∘) and 180^(∘).

Practice makes perfect

By drawing segments between the horizontal and vertical arrowheads, we can see that if we turn the figure by 90^(∘), it will map onto itself.

The same is true if you rotate the figure 180^(∘).

Subchapter links

Communicate Your Answer p.561

Monitoring Progress p.563-565

Exercises p.566-568