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Big Ideas Math Geometry, 2014
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Big Ideas Math Geometry, 2014 View details
2. Reflections
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Exercise 16 Page 186

Recall that if a point (a,b) is reflected in the line y=- x, then its image is (- b, - a).

Practice makes perfect

Before we begin, let's draw the line of reflection.

To reflect the triangle in the given line, we will reflect its vertices. Recall that if a point (a,b) is reflected in the line y=- x, then its image is (- b, - a). With this, let's reflect each vertex of the triangle. &â–ł ABC && â–ł A'B'C' & A(1,2) && A'(-2,-1) & B(4,2) && B'(-2,-4) & C(3,-2) && C'(2,-3) Now that we know the reflected vertices, we can plot them and graph the image.

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arrow_right Communicate Your Answer p.181
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arrow_right Monitoring Progress p.182-185
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Monitoring Progress 4 (Page 182)
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Exercises 7 (Page 186)
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