Geometry H 4.4-4.5 Check-up

Front

What is the formula to find the scale factor of a dilation?

Back

Front

What does a scale factor of k < 1 indicate in a dilation?

Back

A scale factor of k < 1 indicates a reduction.

Front

What does a scale factor of k > 1 indicate in a dilation?

Back

A scale factor of k > 1 indicates an enlargement.

Front

What is a congruence transformation?

Back

A congruence transformation is a transformation that preserves the shape and size of a figure, such as translations, rotations, and reflections.

Front

What is the effect of a translation on a geometric figure?

Back

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

Front

What is the effect of a reflection in the x-axis?

Back

A reflection in the x-axis flips the figure over the x-axis, changing the sign of the y-coordinates.

Front

What is the effect of a reflection in the y-axis?

Back

A reflection in the y-axis flips the figure over the y-axis, changing the sign of the x-coordinates.

Front

What is the effect of a reflection in the line y = x?

Back

A reflection in the line y = x swaps the x and y coordinates of each point.

Front

What is the effect of a rotation of 180 degrees about the origin?

Back

A rotation of 180 degrees about the origin changes the sign of both the x and y coordinates.

Front

What is the relationship between a dilation with a negative scale factor and a rotation?

Back

A dilation with a negative scale factor is equivalent to a dilation with a positive scale factor followed by a rotation of 180 degrees.