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Which statement about the figure MUST be true? Select all that apply.

Which statement about the figure MUST be true? Select all that apply.-example-1

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○=> Correct options :


\color{plum}\tt\bold{(C) \: SR = 27}


\color{plum}\tt\bold{(D) \: QR = 54 }

Steps to derive the correct options :

Since two sides and one included angle is equal in △PQS and △PRS, we can conclude that they are congruent under the SAS congruence criterion.

Which means :

▪︎Angle S = Angle S

▪︎PS = PS

▪︎QS = RS

Given :

Measure of segment QS = 6n+3

Measure of segment RS = 4n+11

Thus :


= \tt6n + 3 = 4n + 11


= \tt6n + 3 - 4n = 11


=\tt 2n + 3 = 11


= \tt2n = 11 - 3


= \tt2n = 8


=\tt n = (8)/(2)


\hookrightarrow\color{plum}\tt n = 4

Thus, the value of n = 4

Measure of segment QS :


=\tt 6n + 3


= \tt6 * 4 + 3


= \tt24 + 3


\color{plum}\tt \: \bold{QS = 6n + 3 = \tt\bold{27}}

Thus, measure of QS = 27

Measure of RS :


=\tt 4n + 11


=\tt 4 × 4 + 11


=\tt 16+11


\color{plum}\tt \: \bold{RS = 4n + 11 = \tt\bold{27}}

Measure of QR :


=\tt 27+27


\color{plum}\tt \: \bold{QR = 27+27 \tt\bold{=54}}

Thus :

▪︎QS = 27

▪︎RS = 27

▪︎QR = 54

Therefore, the correct options are :

▪︎(C) SR = 27

▪︎(D) QR = 54

User Jack Pan
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