1. **State the problem:** We are given a triangle $\triangle FGH$ with angles $m\angle F = (5x - 16)^\circ$, $m\angle G = (2x - 13)^\circ$, and $m\angle H = (8x + 14)^\circ$. We need to find the measure of angle $H$.
2. **Recall the triangle angle sum property:** The sum of the interior angles of any triangle is always $180^\circ$. So,
$$m\angle F + m\angle G + m\angle H = 180^\circ$$
3. **Set up the equation:** Substitute the given expressions:
$$ (5x - 16) + (2x - 13) + (8x + 14) = 180 $$
4. **Combine like terms:**
$$ 5x + 2x + 8x - 16 - 13 + 14 = 180 $$
$$ (5x + 2x + 8x) + (-16 - 13 + 14) = 180 $$
$$ 15x - 15 = 180 $$
5. **Solve for $x$:**
$$ 15x - 15 = 180 $$
Add 15 to both sides:
$$ 15x - \cancel{15} + 15 = 180 + 15 $$
$$ 15x = 195 $$
Divide both sides by 15:
$$ \frac{\cancel{15}x}{\cancel{15}} = \frac{195}{15} $$
$$ x = 13 $$
6. **Find $m\angle H$ by substituting $x=13$ into $8x + 14$:**
$$ m\angle H = 8(13) + 14 = 104 + 14 = 118^\circ $$
**Final answer:**
$$ m\angle H = 118^\circ $$
Triangle Angle 18202F
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