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Does exterior angle of a triangle equals the sum of the interior angles?
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.
What is the measure of one of the exterior angles of regular pentagon?
Mathematically - A regular pentagon has interior angles and sides equal. Bisecting each interior angle and extending a line segment to the center gives you five equal angles (360o/5=72o). Using the triangle formed by two line segements and a side of the pentagon we know the sum of interior angles of each triangle equals (180o) and we know one angle is 72o. The sum the other two interior angles of each triangle equals (180o-72o=108o) which equals each interior angle of the pentagon (equal to the sum of these two angles). Thus the exterior angle of each corner of the pentagon equals (360o-108o=252o). :-)
What is the measure of each exterior angle of a triangle?
Any exterior angle of a triangle always equals the sum of the two interior opposite angles.
Why triangle is called a triangle?
triangles are called what they are because it has 3 angles "tri" is another way of saying 3 and it is made up of 3 90 degree angles in each corner The 3 angles of a Triangle when added together always equals 180 degrees.
What are the angles on the outside of triangles?
The Exterior angles are named as 'REFLEX' angles. At any one angular point, the sum of the Interior angle and the Exterior angle equals 360 degrees. There being three angles in a triangle, then the sum of all the angles is 3 x 360 = 1080 degrees. Since the sum of the three interior angles is 180 degrees., then the sum of the exterior (reflex) angles is 1080 - 180 = 900 degrees.
