WorksheetsDilations: Unit 2: Lessons 1-5 Key Concepts Quiz
Total questions: 11
Worksheet time: 12mins
Center of Dilations- The center of a dilation is a fixed point on a plane. It is the (a) point from which we measure distances in a dilation
If the scale factor is less than 1 then the dilated image is smaller than the original figure.
If the scale factor is (a) than 1 then the dilated image is larger than the original figure.
A dilation maps a circle to a circle, a quadrilateral to a quadrilateral, and a triangle to a triangle.
If the center of dilation is one of the vertices, then that (a) is on the dilated polygon.
A dilation is a type of transformation that changes the size of a figure by a (a) factor.
Unlike in dilations, when we apply a sequence of rigid transformations to a figure, we change the figure’s location and orientation, but not its (a) .
When we dilate point D using P as the center of dilation and a scale factor of 2, that means we’ll take the distance from P to D and place a new point on the ray PD (a) as far away from P.
One way to reverse or “undo” a dilation is to use the same center and (a) scale factor.
The center of dilation, the point being dilated, and the image of the point after dilation must lie on the (a) line.
A scale factor of 1 does not (a) any points. If the scale factor is not 1, only one point does not move (the center of dilation).
Perspective drawing- an optical illusion that makes an image printed on paper have a (a) look
Put the following Steps for Dilations in the correct order
Identify the point being dilated, the center of dilation, and the scale factor.
Use a straightedge to draw a ray from the center through the point being dilated.
Measure the distance from the center of dilation through the point.
Multiply by the scale factor.
Place the new point at that distance from the center and on the ray.
