90 - 42 ie 48o
If the angles A, B and C forms a triangle, then angle A is 111 degrees.
Each exterior angle is 360/42 = 8.571429 degrees So each interior angle is 180 - 8.571429 = 171.4286 degrees.
96˚all angles to a triangle equals 180˚
If you are dealing with an isosceles triangle, if one of the base angles measures 42 degrees then the other base angle measures 42 degrees. (By definitioin an isosceles triangle has at least 2 equal sides and the angle opposite those sides with be equal.) If you add up the degrees in each angle within a triangle, it will always equal 180 degrees. Knowing all this you can set up a formula: Angle 1 + Angle 2 + Angle 3 = 180 42 + 42 + Angle 3 = 180 Angle 3 = 96 degrees
32 degrees
22
It is: 180-42 = 138 degrees
41
90 - 42 ie 48o
The vertex angle of an isosceles triangle is equal to the measure of each of its base angles. Therefore, if one of the base angles measures 42 degrees, then the vertex angle also measures 42 degrees.
8.57 degrees
If the angles A, B and C forms a triangle, then angle A is 111 degrees.
69 degrees 180-42 = 138 138/2 = 69 degrees You do not need the measure of the side to derive the answer.
Each exterior angle is 360/42 = 8.571429 degrees So each interior angle is 180 - 8.571429 = 171.4286 degrees.
The 42 interior angles of a regular 42-agon add up to 7200 degrees and each angle is 7200/42 which is 171.'428571' degrees recurring decimal '428571'
The supplementary angle to 42 degrees is 138 degrees