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Suppose ml|n, pllallr, and D is the midpoint of BG. Is ABCD congruent to DCFE? If so, what

sequences of rigid motions map ABCD to DCFE?
Choose the correct answer below.
O A. Yes. One composition of rigid motions is a translation of ABCD that maps point B to point C
followed by a reflection across line m.
OB. Yes. One rigid motion is a 180° rotation of ABCD about point D.
OC. Yes. One rigid motion is a translation of ABCD that maps point A to point D.
O D. No. There is no rigid motion that maps ABCD to DCFE.

Suppose ml|n, pllallr, and D is the midpoint of BG. Is ABCD congruent to DCFE? If-example-1
User Msuchy
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1 Answer

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The answer is C: Yes. One rigid motion is a translation of ABCD that maps point A to point D.

ABCD and DCFE are both quadrilaterals.

Given information:

ml || n (lines m and n are parallel)

pl || q (lines p and q are parallel)

D is the midpoint of BG

We need to determine if ABCD is congruent to DCFE and if there is a sequence of rigid motions that maps ABCD to DCFE.

Analysis:

Since ml || n and pl || q, and D is the midpoint of BG, we can see that ABCD and DCFE are parallelograms. This is because opposite sides of a parallelogram are parallel.

In parallelograms, opposite sides are congruent. Therefore, we have:

AB = DE

BC = EF

AD = CF

Additionally, since D is the midpoint of BG, we have:

BD = DG

Now, let's consider the rigid motions:

Translation: A translation moves an object without changing its orientation or size. In this case, we can translate ABCD by moving it to the right until point A coincides with point D. This will make ABCD congruent to DCFE.

Therefore, the answer is C. Yes. One rigid motion is a translation of ABCD that maps point A to point D.

The other options are not valid because:

A: This describes a composition of two rigid motions, which is not necessary in this case.

B: A 180° rotation would not map ABCD to DCFE because it would flip the figure, but the sides would not match.

D: As we have shown, there is a rigid motion (translation) that maps ABCD to DCFE.

Therefore, the answer is C. Yes. One rigid motion is a translation of ABCD that maps point A to point D.

User Haspemulator
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