Question

Fan and Medal

Which transformations will produce similar, but not congruent, figures?

A.
Triangle PQR is reflected across the x-axis and then rotated 90° clockwise to form triangle PꞌꞌQꞌꞌRꞌꞌ.

B.
Triangle PQR is reflected across the y-axis and then dilated by a scale factor of 6 to form triangle PꞌꞌQꞌꞌRꞌꞌ.

C.
Triangle PQR is rotated 180° counterclockwise and then translated 11 units left to form triangle PꞌꞌQꞌꞌRꞌꞌ.

D.
Triangle PQR is rotated 90° clockwise and then reflected across the y-axis to form triangle PꞌꞌQꞌꞌRꞌꞌ.

Answer 1

Remember, for something to not be congruent, a change in size would be involved.

Therefore, there would have to be a dilation of shrink of some kind.

Answer 2

The option that has this is your answer.

Answer 3

@SarahMotionless does that make sense?

Answer 4

Yes hold up let me work it out

Answer 5

B?

Answer 6

Remember, rotations, translations, and reflections have NO effect on size

Answer 7

B is correct! nice work :)

Answer 8

Thank you