Mathematics · Geometry

In a quadrilateral ABCD, angles A, B, and C are in the ratio 1:2:3. If angle D = 120°, what is the measure of angle A?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

160°
264°
340°✓
450°

Correct answer

40°

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In a quadrilateral ABCD, angles A, B, and C are in the ratio 1:2:3. If angle D = 120°, what is the measure of angle A?

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In a quadrilateral ABCD, angles A, B, and C are in the ratio 1:2:3. If angle D = 120°, what is the measure of angle A?

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