It's when you add up the exterior angles for an obtuse triangle.
The sum of the interior angles on an Obtuse Triangle is 1800 . This is true of ALL triangles.
Actually, no. The sum of the exterior angles of a triangle is 360 degrees. The sum of the interior angles of a triangle is 180 degrees.
The exterior sum of the angles of any polygon including a triangle is always 360 degrees.
No - not a plane triangle. The angles of a regular triangle must be equal. So an obtuse triangle, if regular, would have three obtuse angles. The sum of the angles would then be greater than 3*90 = 270 degrees. But the sum of angles of a triangle must be 180 degrees.
You mean "two". No. The sum of 2 obtuse angles must be over 180 degrees, which exceeds the sum of the 3 angles of a triangle = 180 degrees.
180 degrees
The sum of all angles in any type of triangle equals 180'
the sum of any triangle is always 180 degrees...
The exterior angles of a triangle add up to 360 degrees.
The sum of the 3 exterior angles of an equilateral triangle add up 360 degrees
The interior angles of ANY triangle sum to 180 degrees.
The 3 exterior angles of any triangle add up to 360 degrees