180 degrees
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The interior angles of a triangle all add up to 180 degrees.
Yes, the sum of all the three interior angles of a triangle is 180o.
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.
A triangle