What is not a congruence transformation

Hi there!

There are four different types of transformations:

-Reflections

-Translations

-Rotations

-Dilations

In a reflection, the shape is simply reflected across a line of reflection. It does not change size or shape, so therefore it is a congruence transformation.

In a translation, the shape is moved up, down, left, or right. It does not change size or shape, so therefore it is a congruence transformation.

In a rotation, the shape is rotated around a point of rotation. It does not change size or shape, so therefore it is a congruence transformation.

In a dilation, the shape is made larger or smaller by a scale factor. It does change size, so therefore it is not a congruence transformation.

The transformation that is not a congruence transformation is a DILATION.

Hope this helps!! :)

If there's anything else that I can help you with, please let me know!

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47