The 4 interior angles of any quadrilateral add up to 360 degrees
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make a v shape
Cut out any 4 sided straight lined shape and the 4 interior angles will always add up to 360 degrees.
first we draw a triangle than we mark3angle of triangle. now think that which no. comes in all 3 angle of triangle that equals to 180 degrees because the sum of 3angles are 180 degr ees.
The complement to an angle is how much it takes to make 90 degrees. The complement to 30 degrees is 60 degrees. The complement to 45 degrees is 45 degrees.
The complement is (90 - the angle) or: how much you have to add to the angle to make 90 degrees.(90 - 72.354) = 17.646 degrees.