Rotational Symmetry o A shape has rotational. It also allows them to discover the rules, which leads to increased engagement. Rotation by 90 ° about the origin: A rotation by 90 ° about the origin is shown. Some simple rotations can be performed easily in the coordinate plane using the rules below. Use a protractor to measure the specified angle counterclockwise. It doesn’t take long but helps students to understand the correlation between the quadrants, the positive/negative ordered pairs, and the direction and degree of the rotation. The amount of rotation is called the angle of rotation and it is measured in degrees.
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