asked 112k views
0 votes
Parallelogram DEFG has been rotated.

2 parallelograms are shown. Both parallelograms have identical side lengths and angles, but the second has been rotated 90 degrees to the right.
Which statements are correct? Check all that apply.
point F → point F'
parallelogram DEFG → parallelogram G'F'E'D'
Point D of the pre-image corresponds to point D' of the image.
ED of the pre-image corresponds to G'F' of the image.
Parallelogram DEFG maps to parallelogram D'E'F'G'.

asked
User AleMal
by
7.6k points

1 Answer

4 votes

Final Answer:

The correct statements are:

Point F → Point F'

Parallelogram DEFG → Parallelogram G'F'E'D'

Parallelogram DEFG maps to parallelogram D'E'F'G'

Step-by-step explanation:

In a rotation of 90 degrees to the right, each point (x, y) in the original parallelogram DEFG is mapped to a new point (-y, x) in the image parallelogram G'F'E'D'. Let's evaluate each statement:

Point F → Point F'

- Original coordinates of F: (x_F, y_F)

- After a 90-degree rotation: (-y_F, x_F)

- Therefore, point F corresponds to point F'.

Parallelogram DEFG → Parallelogram G'F'E'D'

- The rotation of each point in DEFG corresponds to the mapping described above, resulting in the image parallelogram G'F'E'D'. This includes the rotation of all vertices and sides.

Point D of the pre-image corresponds to point D' of the image.

- For point D, the coordinates (x_D, y_D) become (-y_D, x_D) after the rotation. Thus, point D corresponds to point D'.

ED of the pre-image corresponds to G'F' of the image.

- Original coordinates of E: (x_E, y_E)

- Original coordinates of D: (x_D, y_D)

- The vector ED is given by (x_D - x_E, y_D - y_E)

- After the rotation, the coordinates of G'F' are (-y_D + y_E, x_D - x_E)

- Therefore, ED corresponds to G'F'.

Parallelogram DEFG maps to parallelogram D'E'F'G'

- This statement is correct, as demonstrated in the explanations above.

In summary, all three statements are correct, and the rotations and corresponding mappings align with the properties of a 90-degree rotation to the right.

answered
User JoeyD
by
8.7k points
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.