The property that states the interior angles of any three sided figure can be demonstrated in the following geometric formula.
In any three sided figure; angle "A" + angle "B" + angle "C" = 180 degrees
The four interior angles of a trapezoid add up to 360 degrees
180(5-2)=180x3 degrees 540 degrees
Interior angles are 180 degrees Exterior angles are 360 degrees
360 degrees. Interior angles= (n - 2) x 180 over nExterior Angles= 360/n
180 x (7-2) = 900 degrees Actually that is the formula for interior angles. All figures have a sum of 360 degrees for their exterior angles.
The sum of the interior angles of a triangle is 180 degrees. This is because one angle of a triangle is 60 degrees.
Interior angles add up to 180 degrees Exterior angles add up to 360 degrees
The sum of the interior angles in a triangle is 180 degrees
The interior angles of an octagon add up to 1080 degrees
They all have 4 sides and interior angles add up to 360 degrees.
The total. sum of the interior angles of a hexagon are 720 degrees.
The sum of the interior angles of a decagon is 1440 degrees The sum of the interior angles of a triangle is 180 degreesThe difference in the sum of the interior angles of a decagon compared to a triangle = 1440 degrees minus 180 degrees = 1260 degrees