# Which transformation does not preserve congruence

## Which transformation does not preserve congruent?

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

## Which transformation does not preserve?

**Reflection**does not preserve orientation. Dilation (scaling), rotation and translation (shift) do preserve it.

## Does dilation preserve congruence?

Dilations

**preserve congruence while reflections do not**. II. Rotations and reflections both preserve a polygon’s side lengths.## What are not congruent transformations?

Rigid transformations are transformations that preserve the shape and size of the geometric figure. Only position or orientation may change, so the preimage and image are congruent. In non-rigid transformations,

**the preimage and image are not congruent**.## Which transformation does not always preserve distance and angle?

We call transformations that don’t preserve length and angle measurement (as in a dilation) a

**non-rigid transformation**. Altogether, we have three transformations that are rigid transformations which preserve length and angle measurement: translations, rotations, and reflections.## Which of the following transformation would not preserve congruence between the image and pre-image?

A translation is considered a “direct isometry” because it not only maintains congruence, but it also, unlike reflections and rotations, preserves its orientation. On the other hand,

**a dilation**is not an isometry because its Image is not congruent with its Pre-Image.## What are non congruent?

the sides, and noncongruent means “not congruent,” that

**is, not the same shape**. (Shapes that are reflected and rotated and translated copies of each other are congruent shapes.) So we want triangles that look fundamentally different.## What is congruent and not congruent?

Congruent means being exactly the same. When two line segments have the same length, they are congruent. When two figures have the same shape and size, they are congruent. … Similar means that the figures have the same shape, but not the same size.

**Similar figures**are not congruent.## Which is not the congruence rule?

**AAA rule**is not a congruence rule of triangle..

## Which triangle are not congruent?

A triangle only has 3 sides and 3 angles. If we know 4 distinct side measures or 4 distinct angle measures, then we know the

**two**triangles cannot be congruent.## What quadrilateral is not congruent?

**A scalene quadrilateral**is a four-sided polygon that has no congruent sides.

## What are non-congruent gestures?

When your words don’t match your gestures, it’s your

**gestures that will be seen**as the truth. … But it could also be because you have unconsciously read a signal, read their body language, and found an incongruence: the words they say and their body language mismatch, even if very subtly, and you’ve read it.## Is Asa congruent?

The Angle-Side-Angle Postulate (ASA) states that if

**two angles and the included side of one triangle are congruent to two angles and the included side of another triangle**, then the two triangles are congruent.## How many non-congruent triangles are there?

Since a reflection of any triangle gives a congruent triangle we might as well assume each triangle has a base along the bottom row of dots. Here are all the triangles we can make with a base one unit long sitting on the bottom row. We see there are only

**3 non-congruent triangles**of this type.## Is AAS congruent?

In geometry, AAS means

**angle angle side**and is one of the congruence theorems among the 5 different theorems that prove the congruency of two triangles.## Is SSA congruent?

Therefore, SSA (Side-Side-Angle)

**is NOT a congruence rule**.## Is SAA a congruence theorem?

Angle-Angle-Side (AAS or SAA) Congruence Theorem:

**If two angles and a non-included side in one triangle are congruent to two corresponding angles and a non-included side in another triangle, then the triangles are congruent**.## Is AAA a congruence theorem?

Four shortcuts allow students to know two triangles must be congruent: SSS, SAS, ASA, and AAS. … Knowing

**only angle-angle-angle (AAA) does not work because**it can produce similar but not congruent triangles.