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
In an equilateral triangle, each interior angle measures 60 degrees. This is because the sum of the interior angles in any triangle is always 180 degrees, and since all three angles are equal in an equilateral triangle, you divide 180 by 3 to get 60 degrees for each angle.
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.
Each of the interior angles of an equilateral triangle is 120 degrees.
The sum of the interior angles of a triangle on a plane is always 180 degrees.
They are all 60 degrees.
Because a triangle has 3 interior angles that total up to 180 degrees but an obtuse and a right angle are 2 angles which add up to over 180 degrees.