In the image below, what is the sum of the gray angles (in degrees)?
360 degrees. The sum of the three angles of a triangle is 180 degrees. There are 3 triangles -> 540 degrees. The three angles not grey are 180 degrees total. The total angle of the grey angles is 540 - 180 = 360 degrees
According to the image below, what is the measure (in degrees) of angle ABC?
In the following figure, 3 unit squares are placed side by side. Find the sum of angles a+b+c = ??.
