Will give ! which types of dilation are the given scale factors? select expansion or contraction to correctly describe the type of dilation for each given scale factor. scale factor −54 38 −1.2 0.5

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For 0.5 the dilation are reduction and for -54, -1.2 and 38 it is an enlargement.

Step-by-step explanation:

We know that, dilation is a transformation that changes the size of the figure. The two changes in the size are:

1. Enlargement i.e. makes the figure larger than the original

2. Reduction .i.e. makes the figure smaller than the original

Dilation depends on a scale factor say 'k'. Then:

1. If k > 1 , the figure is an enlargement

2. If k < 1 , the figure is a reduction.

The negative sign reflects the image and has no effect on dilation of a figure.

Now, we have scales -54, 38, -1.2, 0.5

So, using above concept, we get that,

For 0.5 the dilation are reduction

For -54, 38, -1.2 the dilation is an enlargement.

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step-by-step explanation:

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.