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May you help me find the M

May you help me find the M-example-1
User TheBoubou
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1 Answer

15 votes
15 votes

Notice that the figure on the picture is an isosceles trapezoid, then, the base angles are equal and we would have the following expression:


9x-17=4x+28

solving for x, we get:


\begin{gathered} 9x-17=4x+28 \\ \Rightarrow9x-4x=28+17=45 \\ \Rightarrow5x=45 \\ \Rightarrow x=(45)/(5)=9 \\ x=9 \end{gathered}

now that we know the value of x, we can find the explicit value of angle Q:


\begin{gathered} \measuredangle Q=9(5)-17=45-17=28 \\ \Rightarrow\measuredangle Q=28 \end{gathered}

next, we know as a general rule that the angles in a trapezoid that are adjacent are supplementary, then, we have the following:


\begin{gathered} \measuredangle Q+\measuredangle T=180 \\ \Rightarrow28+\measuredangle T=180 \\ \Rightarrow\measuredangle T=180-28=152 \\ \measuredangle T=152 \end{gathered}

therefore, the measure of angle T is 152 degrees

User Raymond Wu
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