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Question
a triangle has interior angle measures of 4v, 2v, and v + 14°. what is the value of v?
write your answer as an integer or as a decimal rounded to the nearest tenth.
v =
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done for now? try these next:
angle - angle criterion for similar triangles
interior angles of polygons
Step1: Use the triangle angle - sum theorem
The sum of the interior angles of a triangle is \(180^{\circ}\). So, \(4v + 2v+(v + 14)=180\).
Step2: Combine like terms
Combine the \(v\) terms: \((4v+2v + v)+14 = 180\), which simplifies to \(7v+14 = 180\).
Step3: Isolate the variable term
Subtract \(14\) from both sides: \(7v+14 - 14=180 - 14\), so \(7v=166\).
Step4: Solve for \(v\)
Divide both sides by \(7\): \(v=\frac{166}{7}\approx23.7\).
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\(23.7\)