U5 Study Guide #1

Front

What is the result of rotating point H (2,5) 270 degrees clockwise about the origin?

Back

(-5,2)

Front

True or False: The length of line segment GH is equal to the length of line segment G'H' after trapezoid GHJK is translated 4 units up and reflected across the x-axis.

Back

True

Front

True or False: The length of line segment KJ is less than the length of line segment K'J' after trapezoid GHJK is translated 4 units up and reflected across the x-axis.

Back

False

Front

True or False: The perimeter of trapezoid GHJK is equal to the perimeter of trapezoid G'H'K'J' after translation and reflection.

Back

True

Front

What transformation occurs when triangle 1 is transformed into triangle 2 by reflecting across the y-axis?

Back

Reflection across the y-axis

Front

What is the effect of translating a shape 4 units up on its coordinates?

Back

Each y-coordinate increases by 4.

Front

What is the definition of reflection in geometry?

Back

A transformation that flips a figure over a line, creating a mirror image.

Front

What is the definition of rotation in geometry?

Back

A transformation that turns a figure around a fixed point, called the center of rotation.

Front

What is the definition of translation in geometry?

Back

A transformation that moves every point of a figure the same distance in the same direction.

Front

What is the definition of dilation in geometry?

Back

A transformation that changes the size of a figure but not its shape, using a scale factor.