Formulas
The angles inside a triangle add to how many degrees?
180
Inside a triangle there are two known angles. Angle 1: 40 degrees. Angle 2: 80 degrees. What is the third missing angle?
60 degrees
In an isosceles triangle has two 80-degree angles, what is the third missing angle?
20 degrees
An isosceles triangle has an apex angle of 110 degrees. What are the two base angles?
35 degrees
An equilateral triangle has what angle in each corner?
60 degrees