Build on student experience with rigid motions from earlier grades. Point out the basis of rigid motions in geometric concepts, e.g., translations move points a specified distance along a line parallel to a specified line; rotations move objects along a circular arc with a specified center through a specified angle.

## Collection Contents

### Quiz - Congruence, Proof, and Constructions Cluster: Experiment with transformations in the plane: Standards: G.CO.1, G.CO.2, G.CO.3, G.CO.4, G.CO.5

by Allen Wolmer

Standards: G.CO.1, G.CO.2, G.CO.3, G.CO.4, G.CO.5
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### G.CO.1 Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment

by Allen Wolmer

Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
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'C' - Curriki rating

### G.CO.2 Represent transformations in the plane using, e.g., transparencies and geometry software

by Allen Wolmer

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)
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### G.CO.3 Given a rectangle, parallelogram, trapezoid, or regular polygon, describe the rotations and reflections that carry it onto itself.

by Allen Wolmer

Given a rectangle, parallelogram, trapezoid, or regular polygon, describe the rotations and reflections that carry it onto itself.
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Curriki RatingC
'C' - Curriki rating

### G.CO.4 Develop definitions of rotations, reflections, and translations

by Allen Wolmer

Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments.
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'C' - Curriki rating

### G.CO.5 Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure

by Allen Wolmer

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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Curriki RatingC
'C' - Curriki rating

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