12.5 Reflections

The point (11, 28) is reflected over the ​ ​ (a)   to create the point ​ (b)  

• Y-Axis
• (-11, 28)
• X-axis
• (-11, -28)
• (11, 28)

The point (11, 28) will be reflected. Match the point to the correct transformation.

• (-11, 28)

• Reflection over the Y-axis

• (11, -28)

• Reflection over the X-axis

• (28, 11)

A point will be reflected over the x-axis to create (11, 28). What is the pre-image?

• (11, 28)

• (-11, 28)

• (-11, -28)

• (11, -28)

Triangle 1 is dilated by a scale factor or 4.1 using the origin as the center of dilation to create Triangle 2. Which statement about the area and perimeter of Triangle 2 is true?

• The perimeter is 4.1 times the perimeter of Triangle 1, and the area is 4.1 times the area of Triangle 1.

• The perimeter is 8.2 times the perimeter of Triangle 1, and the area is 8.2 times the area of Triangle 1.

• The perimeter is 4.1 times the perimeter of Triangle 1, and the area is 16.81 times the area of Triangle 1.

• The perimeter is 16.4 times the perimeter of Triangle 1, and the area is 16.81 times the area of Triangle 1.

A circle with center R( 12 , -5 ) on a coordinate plane is transformed so that its image forms a circle with center R' ( 12, 5 ).

Which rules describe the transformations that result in a circle with center R'?

Select TWO correct answers

• congruent
• is not
• not similar
• is