take away from 360 the sum of the knows angles and you will have the angle d.
360 - 108 - 108 - 72 = 72°
Another question on Mathematics
Mathematics, 21.06.2019 15:20
Which of the following describes how to translate the graph y = xi to obtain the graph of y = x - 11 - 12 1 unit left and 1 unit down 1 unit left and 1 unit up 1 unit right and 1 unit down 1 unit right and 1 unit up
Quadrilateral wxyz is on a coordinate plane. segment yz is on the line x+y=7 and segment xw is on the line x+y=3. which statement proves how segments yz and xw are related