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Two angles of a quadrilateral measure \( 194^{\circ} \) and \( 98^{\circ} \). The other two angles are in a ratio of \( 5: 12 \). What are the measures of those two angles? Submit

Ask by Montgomery Tucker. in the United States
Feb 26,2025

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Tutor-Verified Answer

Answer

The two angles measure 20° and 48°.

Solution

The sum of the interior angles of any quadrilateral is 360°. Two of the angles are given as 194° and 98°, so the sum of the remaining two angles must be:   360° - (194° + 98°) = 360° - 292° = 68° If the remaining angles are in a ratio of 5:12, we can let them be 5x and 12x. Then:   5x + 12x = 17x = 68° Solving for x gives:   x = 68° / 17 = 4° Thus, the two angles are:   5x = 5(4°) = 20°   12x = 12(4°) = 48° So, the measures of the two angles are 20° and 48°.

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To find the measures of the other two angles in the quadrilateral, we first note that the sum of the interior angles of a quadrilateral is \( 360^{\circ} \). Given that two angles measure \( 194^{\circ} \) and \( 98^{\circ} \), we can calculate the sum of these two angles: \[ 194^{\circ} + 98^{\circ} = 292^{\circ} \] Now, we can find the sum of the remaining two angles: \[ 360^{\circ} - 292^{\circ} = 68^{\circ} \] Let the two remaining angles be \( 5x \) and \( 12x \) according to the given ratio of \( 5:12 \). The sum of these two angles is: \[ 5x + 12x = 17x \] Therefore, we can set up the equation: \[ 17x = 68^{\circ} \] Solving for \( x \): \[ x = \frac{68^{\circ}}{17} = 4^{\circ} \] Now we can find the measures of the two angles: \[ 5x = 5 \times 4^{\circ} = 20^{\circ} \] \[ 12x = 12 \times 4^{\circ} = 48^{\circ} \] Thus, the measures of the other two angles are \( \boxed{20^{\circ}} \) and \( \boxed{48^{\circ}} \).

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