The sum of interior angles in a triangle MUST add up to 180 degrees, or it is not a triangle. This works for ALL TRIANGLES! Also there must be exactly 3 angles, or it is not a triangle, hence the name Triangle. Tri (3) Angles
180 degrees.
Chat with our AI personalities
The Interior angles of a triangle add up to 180° The Exterior angles of a triangle (or any other polygon) add up to 360°.
The exterior sum of the angles of any polygon including a triangle is always 360 degrees.
The sum of all three interior angles of any triangle, isosceles or not, is 180 degrees.
The sum of the three interior angles of a triangle always total 180 degrees.
Yes the 3 interior angles of any triangle always add up to 180 degrees.