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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

2. Reflections

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Exercise 26 Page 557

What is the direction of the translation?

AB to A'B' is not a glide reflection, see solution.

Practice makes perfect

From the figure, we notice that AB is being translated 2 units to the left and 3 units up.

To do a glide reflection, the line of reflection must be parallel to the direction of the translation. But as we can see from the figure, A'B' is reflected in the y-axis which is a vertical line.

Therefore, this cannot be a glide reflection. To correct the statement, we should write AB to A'B' is not a glide reflection.

Subchapter links

Communicate Your Answer p.551

Monitoring Progress p.552-555

Exercises p.556-558