Question

Rotate the given triangle 270° counter-clockwise about the origin.

Answer 1

The rotation of the triangle $\left[\begin{array}{ccc}-1&2&2\\-1&-1&3\end{array}\right]$ 270° counter-clockwise about the origin gives $\left[\begin{array}{ccc}-1&-1&3\\1&-2&-2\end{array}\right]$

What is transformation?

Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, reflection, translation and dilation.

If a point (x, y) is rotated 270° counter-clockwise about the origin, the new point is (y, -x)

The rotation of the triangle $\left[\begin{array}{ccc}-1&2&2\\-1&-1&3\end{array}\right]$ 270° counter-clockwise about the origin gives $\left[\begin{array}{ccc}-1&-1&3\\1&-2&-2\end{array}\right]$

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