Three of the angles of a quadrilateral are 53°, 127° and 72°. what is the size of the 4th angle?

The size of the fourth angel = 360 - ( 53 + 127 + 72 ) = 108

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I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.