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Can you show me how to solve this it is angles in a triangle

Can you show me how to solve this it is angles in a triangle-example-1
User Bruce Nielsen
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1 Answer

16 votes
16 votes

Vertical angles are two non-adjacent angles formed by intersecting two lines. The intersection forms two pair of vertical angles. And it is true that:


\begin{gathered} x=40 \\ y=z \end{gathered}

For the green triangle, we can use the triangle sum theorem, which states that the sum of the internal angles of a triangle is equal to 180, so:


\begin{gathered} x+y+35=180 \\ 40+y+35=180 \\ \text{solve for y:} \\ y+75=180 \\ y=180-75 \\ y=105 \end{gathered}

Using the same theorem for the blue triangle:


\begin{gathered} w+105+49=180 \\ w+154=180 \\ w+154=180 \\ \text{solve for w:} \\ w=180-154 \\ w=26 \end{gathered}

? = w, therefore, ? = 26

Can you show me how to solve this it is angles in a triangle-example-1
User Ilrein
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