Similarity Transformations & Symmetry

Which of the following are similarity transformations? Select all that apply.

• Dilation

• Reflection

• Rotation

• Translation

• Stretch

Tags

CCSS.8.G.A.3

A ​ (a)   is a similarity transformation, but not a rigid transformation.

• dilation
• rotation
• translation
• reflection
• stretch

All rigid transformations are similarity transformations.

• True

• False

Mathematical Equivalence

ON

Mathematical Equivalence

ON

_{How many lines of symmetry does an equilateral triangle have and what is the degree of rotational symmetry?}

• 0 lines of symmetry and the degree of rotational symmetry is 90

• 3 lines of symmetry and the degree of rotational symmetry is 90

• 1 line of symmetry and the degree of rotational symmetry is 120

• 3 lines of symmetry and the degree of rotational symmetry is 120

Point A (4, -2) is reflected over the line y = x, rotated 270 degrees CCW and reflected over the y-axis. What is A'''?

• Point A''' is (4, -2)

• Point A''' is (4, 2)

• Point A''' is (-2, 4)

• Point A''' is (-4, 2)

Describe the transformation.

• reflection across the line y = x

• reflection across the line y = -x

• rotation 180 degrees CCW about the origin

• rotation 90 degrees clockwise about the origin

What type of symmetry does this shape have?

• Only Rotational Symmetry

• Only Line Symmetry

• Both Rotational and Line Symmetry

• Neither Rotational nor Line Symmetry

Which properties NEVER change from the pre-image to the image in a rigid transformation?

Select ALL that apply.

• The length of the line segments

• The position of the figure.

• The angle measures.

• The orientation of the object.

• The area of the image.