A rectangular picture frame has a length of 20 inches and a width of 15 inches. The perimeter of the frame can be found using the formula 2l+2w, where l is the length and w is the width. What is the perimeter of the picture frame in inches

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180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)

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