Triangle JKL is reflected over the y-axis and then dilated by a scale factor of 2 centered at the origin. Which of the following statements describes the properties of triangles JKL and J''K''L'' after the transformations?

Corresponding angles are congruent after the reflection, but not after the dilation.
Corresponding angles are congruent after both the dilation and the reflection.
Corresponding sides are congruent after the dilation, but not after the reflection.
Corresponding sides are congruent after both the reflection and the dilation.

Question

Triangle JKL is reflected over the y-axis and then dilated by a scale factor of 2 centered at the origin. Which of the following statements describes the properties of triangles JKL and J''K''L'' after the transformations?

Corresponding angles are congruent after the reflection, but not after the dilation.
 Corresponding angles are congruent after both the dilation and the reflection.
 Corresponding sides are congruent after the dilation, but not after the reflection.
 Corresponding sides are congruent after both the reflection and the dilation.

Gucchi · Answer

@jhonyy9

Gucchi · Answer

am i right with A?

jhonyy9 · Answer

reflection and dilation do change angle measure ?

jhonyy9 · Answer

no never

Gucchi · Answer

@jhonyy9 wrote:

no never

yes right

Gucchi · Answer

they dont change

jhonyy9 · Answer

so in this way what choice will be right ?

Gucchi · Answer

so its either B or D

Gucchi · Answer

But i would say D because reflection comes first right?

jhonyy9 · Answer

when you dilate a side get the same side length ?

Gucchi · Answer

@jhonyy9 wrote:

when you dilate a side get the same side length ?

Yes

jhonyy9 · Answer

what mean dilatation ?

dilate a side of 2 by 2 so result a side of 2×2= 4

so now what you think about this ?

Gucchi · Answer

WAIT B is correct.

Gucchi · Answer

Corresponding angles are congruent after both the dilation and the reflection.

jhonyy9 · Answer

please thought about the right answer

jhonyy9 · Answer

think on it

Gucchi · Answer

@jhonyy9 wrote:

what mean dilatation ? dilate a side of 2 by 2 so result a side of 2×2= 4 so now what you think about this ?

so you would get a different side length

jhonyy9 · Answer

@gucchi wrote:

@jhonyy9 wrote:

what mean dilatation ? dilate a side of 2 by 2 so result a side of 2×2= 4 so now what you think about this ?

so you would get a different side length

perfect

Gucchi · Answer

So A would be correct since dilation would give you a different side length?

Gucchi · Answer

@jhonyy9 are you here?

jhonyy9 · Answer

the second part of A do you think it true ?

Gucchi · Answer

no it doesnt look true

Gucchi · Answer

The answer is definitely B

jhonyy9 · Answer

@gucchi wrote:

The answer is definitely B

perfect

Gucchi · Answer

thank you so much

jhonyy9 · Answer

anytime