Transformation Rules

What does translation mean in geometry?

• Rotating a shape

• Sliding/Moving a shape

• Flipping a shape

• Resizing a shape

Which option represents a dilation that is enlarging?

• (x, y) --> (2.5x, 2.5y)

• (x, y) --> (x + 2.5, y+ 2.5)

• (x, y)--> (0.7x, 0.7y)

• (x, y) --> (1.5x, 1.5y)

(x,y)--> (-x, -y)

• 90* rotation

• 180* rotation

• 270* rotation

• Reflection over the x-axis

What is the coordinate rule for a translation that moves (x, y) 6 units to the right and 3 units down?

• (x + 6, y - 3)

• (x - 6, y + 3)

• (x + 3, y - 6)

• (x - 3, y + 6)

What is the coordinate rule for a translation which moves (x , y) 5 units to the left and 7 units up?

• (x - 5 , y + 7)

• (x + 5 , y - 7)

• (x - 5 , y - 7)

• (x + 5 , y + 7)

What transformation does NOT preserve congruency?

• A) dilation

• B) translation

• C) reflection

• D) rotation

What does it mean for two shapes to be congruent?

• They have the same size and shape.

• They have different sizes but the same shape.

• They have the same area but different shapes.

• They are similar but not identical.

(x, y) --> (x, -y)

• Reflection over the x-axis

• Reflection over the y-axis

• Rotation 90 degrees clockwise

• Translation along the x-axis

What is a transformation in geometry?

• A change in the position, size, or shape of a figure.

• A method to calculate the area of a triangle.

• A technique to draw geometric figures accurately.

• A process to measure angles in a polygon.

The rule for rotation of 180 degrees is (x, y) --> ?

• (x, y)

• (y, x)

• (-x, -y)

• (x, -y)