Following a translation, the measures of the angles in a pre-image _____. are in the opposite orientation of the corresponding angles in its image. are congruent to the measures of the corresponding angles in its image. are larger or smaller based on the scale factor used of the corresponding angles in its image. are at the same angle displacement about a given point.
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Answer:
In △ABC AB=AC
⇒∠B=∠C (Angles opposite to equal sides are equal)
Now using angle sum property
∠A+∠B+∠C=180
∘
⇒80
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+∠C+∠C=180
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⇒2∠C=180
∘
−80
∘
⇒∠C=
2
100
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=50
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now ∠C+∠x=180
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(Angles made on straight line (AC) are supplementary)
⇒50
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+∠x=180
∘
⇒∠x=180
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−50
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=130
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