Question

hailey cuts a 7 - inch square piece of plywood for a birdhouse. she rotates the piece 90° counterclockwise. what is the length in inches of each side of the piece of plywood after the rotation? enter the correct answer in the box. inches 7 8 9 + 4 5 6 - ( ) 1 2 3 × 0 ÷ =

Explanation:

Step1: Recall property of rotation

Rotation is a rigid - motion transformation. In a rigid - motion transformation, the shape and size of the figure do not change.

Step2: Determine side - length of square after rotation

Since the original square piece of plywood has a side - length of 7 inches and rotation is a rigid motion, the side - length of the square after a 90° counterclockwise rotation remains the same.

Answer:

7