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ISEE Lower Level
Mathematics Achievement

Calculating Angles in a Quadrilateral

Medium Geometry Angles

In a quadrilateral, the sum of all four interior angles is 360 degrees. If angle A measures 90 degrees, angle B measures 85 degrees, and angle C measures 95 degrees, what is the measure of angle D?

Remember that the total of the angles in a quadrilateral is given by the formula: $$360^{ ext{o}}$$.

Hint

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