Find the obtuse angle of a parallelogram if its acute angle is 16 °.

A parallelogram is a quadrilateral whose opposite angles are equal.
The sum of the angles adjacent to one side is 180 ° (by the property of parallel straight lines) So, to find an obtuse angle of a parallelogram, you need

180 – 16 = 164 °

Answer: the angle is 164 °



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