To check: whether the additional information in the given option would be enough to prove the given similarity. Given: The given similarity is /_ADC~/_BEC 12210202961.jpg The given options are: A./_DAC and /_ECB are congruent. B.bar(AC) and bar(BC) are congruent. C.bar(AD) and bar(EB) are parallel. D./_CEB is a right triangle.

Question
Similarity
asked 2021-01-28
To check: whether the additional information in the given option would be enough to prove the given similarity.
Given:
The given similarity is \(\displaystyle\triangle{A}{D}{C}\sim\triangle{B}{E}{C}\)
image
The given options are:
A.\(\displaystyle\angle{D}{A}{C}{\quad\text{and}\quad}\angle{E}{C}{B}\) are congruent.
B.\(\displaystyle\overline{{{A}{C}}}{\quad\text{and}\quad}\overline{{{B}{C}}}\) are congruent.
C.\(\displaystyle\overline{{{A}{D}}}{\quad\text{and}\quad}\overline{{{E}{B}}}\) are parallel.
D.\(\displaystyle\angle{C}{E}{B}\) is a right triangle.

Answers (1)

2021-01-29
Calculation:
The given similar triangle is \(\displaystyle\triangle{A}{D}{C}\sim\triangle{B}{E}{C}\). And this is only possible \(\displaystyle\overline{{{A}{D}}}{\quad\text{and}\quad}\overline{{{E}{B}}}\) are parallel.
Therefore, \(\displaystyle\angle{C}{A}{D}{\quad\text{and}\quad}\angle{C}{D}{A}\) is equal to the \(\displaystyle\angle{C}{B}{E}{\quad\text{and}\quad}\angle{C}{E}{B}\), so that the triangle is similar by AA-similarity
Hence, the correct option is (C).
0

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