Problema Solution
The sum of the four angle measures of any convex quadrilateral is
360
degrees. Suppose that a convex quadrilateral has angle measures of
30
,
+10y1
, and
−6y7
degrees. Write an expression for the degree measure of the fourth angle.
Answer provided by our tutors
The measures of the three angles are 30, 10y^1 and -6y^7 and we need to find the measure of the forth angle.
Knowing the sum of all four angles is 360 we calculate the measure of the forth angle:
360 - (30 + 10y^1 - 6y^7) = 330 - 10y + 6y^7 degrees,