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In the figure below, triangle JPK is an equilateral triangle, and quadrilateral KNML is a parallelogram.
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In the figure below, triangle JPK is an equilateral triangle, and quadrilateral KNML is a parallelogram.

In the figure below, triangle JPK is an equilateral triangle, and quadrilateral KNML-example-1
User Skytreader
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c. 71°

180-131= 49
49°is the other angle of the parallelogram

equilateral triangle all angles equal 60°

60+49= 109
180-109= 71°
User Joemoe
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