Find missing angles of quadrilaterals

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Find missing angles of a quadrilateral
A quadrilateral has four angles that add to 360 degrees.
You can use this fact to find missing angles.
Problem 1: A quadrilateral has two 45 degree angles and a 100-degree angle. Find the missing angle.

Problem 2 A parallelogram has two angles of 42 degrees. Find the missing angles.
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Everyone just came here cuz our math teachers linked us this for online school...

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