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Advocard [28]
3 years ago
7

Multiple similary transformations are performed on a triangle. Which elements must be presented?

Mathematics
1 answer:
solmaris [256]3 years ago
4 0

Answer:

d. overal size

Step-by-step explanation:

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<h2>x^{\circ}=21^{\circ} \ and \ y^{\circ}=39^{\circ}</h2>

Step-by-step explanation:

We know that vertically opposite angles of a parallelogram are equal .

\angle ABC =\angle ADC\ and \ \angle BAD = \angle DAC

⇒3x^{\circ}=(4x-21)^{\circ} \ and \ 3y^{\circ}=(y+78)^{\circ}

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7 0
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Step-by-step explanation:

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