The sum of the measures of the angles of a triangle is 180°.
The following sets of angles could not be the measures of the three angles of a triangle.
28° + 64° + 98° = 190°
19° + 40° + 111° = 170°
This set of angles could be the measures of the three angles of a triangle.
40° + 64° + 76° = 180°
The measure of an exterior angle of a triangle is equal to the
sum of the two non-adjacent interior angles of the triangle.
The following pair of angles could not be the values of w and x.
55° + 85° = 140°
The following pairs of angles could be the values of w and x.
44° + 91° = 135°
46° + 89° = 135°