Topics
1. Congruence and Constructions
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United States of AmericaNJ
Geometry

1.08 Reflections

Lesson
Practice

Interactive practice questions

Consider the point $A\left(7,3\right)$A(7,3).

a

Plot point $A$A on the number plane.

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b

Now plot point $A'$A′, a reflection of point $A$A across the $x$x-axis.

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Easy
< 1min

Consider the point $A\left(-5,-6\right)$A(−5,−6).

Easy
< 1min

Plot the following.

Easy
< 1min

Plot the following.

Easy
< 1min
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Outcomes

G.CO.A.2

Represent transformations in the plane using, e.g. Transparencies and geometry software; describe transformations as functions that take points in the plane as inputs and give other points as outputs. Compare transformations that preserve distance and angle to those that do not (e.g. Translation versus horizontal stretch).

G.CO.A.4

Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments.

G.CO.A.5

Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure using, e.g. Graph paper, tracing paper, or geometry software. Specify a sequence of transformations that will carry a given figure onto another.

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