Maths Ch.9 Symmetry Transformations

The rule for reflection over the y-axis is

(x, y) --> _

• (-x, y)

• (x, -y)

• (y, x)

• (-y, x)

Translations, reflections and rotations are all known as ________________________.

• Geometry
• Transformations
• Congruent

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Identify the transformation from ABC to A'B'C'.

• 90^o clockwise rotation
• 90^o counter clockwise rotation
• Reflection across the y-axis
• Reflection across the x-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Point (-5,2) is reflected over the y-axis. Where is the new point located?

• (5,2)

• (-5,-2)

• (-5,2)

• (5,-2)

A flip is also called a __________

• Translation
• Rotation
• Reflection
• Transformation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

How many axes of symmetry does this shape have?

• 1

• 2

• 4

• 6

How many lines of symmetry does the picture have? 

• 0 lines of symmetry
• 1 line of symmetry
• 2 lines of symmetry
• 4 lines of symmetry

Tags

CCSS.4.G.A.3

How many of these shapes have EXACTLY ONE axis of symmetry?

• 0

• 3

• 6

• 9

How many lines of symmetry does this rhombus have?

• 1
• 2
• 3
• 4

Tags

CCSS.4.G.A.3

A(–2, 1) is translated to the right by 3 units and then translated upwards by 2 units to A₁. Find the coordinates of A₁

• (1, 3)

• (1, –1)

• (0, 4)

• (3, 2)