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## What does it mean when a transformation preserves congruence?

When a figure is transformed with one or more rigid transformations, an image is **created that is congruent to the original figure**. Recall that rigid transformations preserve distance and angles. … This means that congruent figures will have corresponding angles and sides that are the same measure and length.

## What does a transformation preserve?

1 Answer. Linear transformations preserve: **Collinearity**. If three points are collinear before the transformation, they remain collinear afterwards.

## Are transformations always congruent?

We now know that the rigid transformations (reflections, translations and rotations) preserve the size and shape of the figures. That is, **the pre-image and the image are always congruent**. … It is possible to turn, flip and/or slide one figure so it will fit exactly on the other figure.

## Which transformations that do not preserve congruence?

**A dilation** is the only transformation that does not preserve congruency but preserves orientation.

## Which transformation does not preserve size?

( Isometric means that the transformation doesn’t change the size or shape of the figure.) A fourth type of transformation, a **dilation** , is not isometric: it preserves the shape of the figure but not its size.

## Does translation preserve distance?

Under a translation, the image of any line segment is a line segment that is equal in length and parallel to the object line segment. Corresponding sides are equal and parallel. Translation **preserves** the distance between two points. Translation preserve length.

## Does translation preserve size or shape?

In geometry, a translation of a function means every point is moved left/right or up/down from it’s original position in the same direction and distance from where it originally was. That means that in a translation, **size, shape and orientation are preserved**.

## What transformation always preserves the orientation of a figure?

**Rotation and translation** preserve orientation, as objects’ pieces stay in the same order. Reflection does not preserve orientation.

## Which transformation creates congruent?

**Rotations, reflections, and translations** are isometric. That means that these transformations do not change the size of the figure. If the size and shape of the figure is not changed, then the figures are congruent.

## Which transformations create images that are congruent *?

Because the image of a figure under a translation, reflection, or rotation is congruent to its preimage, **translations, reflections, and rotations** are examples of congruence transformations.