Question

A student performed the composition rx Ro 90 on figure A. Evaluate the students completion of the composition.

A.
The student performed the composition correctly.
B.
The student reflected across the x-axis first rather than rotating the figure 90° counterclockwise.
C.
The student rotated the figure 90° clockwise rather than 90° counterclockwise.
D.
The student reflected across the y-axis rather than the x-axis.

Answer 1

The correct answer is C

Explanation:

The first composition performed by student is rotation of 90° clockwise on A to get A'' then A' can't be obtained either by reflecting A'' across x-axis or y-axis.

But on rotating A by 90° counterclockwise to get A'' and reflecting this A'' across x-axis we get the required composition.

So, student need to rotate the figure 90° anticlockwise instead of 90° clockwise

So, The right answer is C.

Answer 2

First: The student rotated the figure 90° clockwise.
Second: The student reflected across the x-axis.

Answer: Option C. The student rotated the figure 90° clockwise rather than 90° counterclockwise.