Answer both of the following questions: (a) The four angles of a quadrilateral areas 2:4:1:5. Find the angles.(b) Is an equilateral triangle a regularpolygon?

Answer both of the following questions: (a) The four angles of a qua

1.	Answer both of the following questions: (a) The four angles of a quadrilateral areas 2:4:1:5. Find the angles.(b) Is an equilateral triangle a regularpolygon?
Answer» Consider the angles of a quadrilateral as 2X, 4x, 5x and 7x In a quadrilateral we KNOW that the sum of all the angles is 360o So we can write it as 2x + 4x + 5x + 7x = 360o By addition 18X = 360o By division XO = 20o Now by substituting the value of xo 2x = 2(20o) = 40o 4x = 4(20o) = 80o 5x = 5(20o) = 100o 7x = 7(20o) = 140O Therefore, the angles are 40o, 80o, 100o and 140o.Step-by-step explanation:Nikuuu~