Every segment is congruent to its image.

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This presentation is the intellectual property of Christine Markstrum Chapter 7 Transformations.

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Presentation transcript:

Every segment is congruent to its image. Transformations are called RIGID if every image is congruent to its preimage. Rigid transformations can also be referred to as an ISOMETRY. Every segment is congruent to its image.

they preserve angle measures Isometries not only preserve lengths, but they preserve angle measures parallel lines, and betweenness of points

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Quadrant II Quadrant I (x,y) x-axis Quadrant III Quadrant IV y-axis

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A translation "slides" an object a fixed distance in a given direction A translation "slides" an object a fixed distance in a given direction. The original object and its translation have the same shape and size, and they face in the same direction. Objects that are translated are congruent. *The word "translate" in Latin means "carried across".

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