Because the 3 interior angles must add up together to equal 180 degrees
A heptagon. It can have a reflex interior angle, a triangle cannot.
Either could have a larger interior angle. If they were regular, then the interior angle of a triangle would be 60 degrees whereas that of a heptagon would be 128.57 degrees. The REGULAR heptagon would have a larger interior angle than a REGULAR triangle.
The sum of the interior angles of a triangle is 180 degrees. This is because one angle of a triangle is 60 degrees.
The 3 interior angles of a triangle add up to 180 degrees
No but a right angle triangle can be considered to be an isosceles triangle when its interior angles are 90, 45 and 45 degrees.
180 degrees
No because the 3 interior angles of a triangle must add up to 180 degrees and only a right angle triangle has 1 interior angle of 90 degrees.
The sum of the interior angles of a triangle on a plane is always 180 degrees.
Each of the interior angles of an equilateral triangle is 120 degrees.
They are all 60 degrees.
60 degrees
60 degrees.