-- Measure, calculate, or somehow get the measure of each interior angle. -- Add them all up to get one number which is their sum. -- That one number is the sum of the interior angles.
Angles that have a measure sum of 90.
The third angle is 85 degrees. The sum of all internal angles in a triangle is always 180 degrees
The sum of all angles in any triangle equals 180 degrees.
supplementary angles.
-- Measure, calculate, or somehow get the measure of each interior angle. -- Add them all up to get one number which is their sum. -- That one number is the sum of the interior angles.
Angles that have a measure sum of 90.
The sum of the four interior angles is 360 degrees.
All exterior angles of any polygon sum to 360 deg. If there are 9 angles then each angle is 40 degrees.
The third angle is 85 degrees. The sum of all internal angles in a triangle is always 180 degrees
As for all polygons the exterior angles add up to 360 degrees
The sum of all angles in any triangle equals 180 degrees.
They are supplimentary angles.
Complementary angles
supplementary angles.
The sum is two straight angles or 360 degrees.
The total sum of all angles in any triangle is 180 degrees.