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Geometry: Rigid Transformations
Rotating a Figure 90 Degrees Clockwise
Description
Rotating a Figure 90 Degrees Clockwise
Introduction
A rotation turns a figure around a fixed point without changing its size or shape. On a coordinate plane, rotation rules help us find the new coordinates of every vertex.
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Transcript
Imagine you are solving a problem from your math textbook: Rotate triangle JKL 90 degrees clockwise about the origin on the coordinate plane.
The vertices of the triangle are (4, 3), (7, 3), and (6, 6).
A 90-degree clockwise rotation follows the rule (x, y) → (y, −x). This means swap the x- and y-coordinates and make the new y-coor...
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