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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.
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Do Similar triangles have proportional angles?
Similar triangles don't just have proportional angles, they have IDENTICAL angles!
Are triangles equilateral?
Some triangles are equilateral, but not all of them. There are three types of triangles. Triangles which have three equal sides and three equal angles are called equilateral triangles. Isosceles triangles have two equal sides and two equal angles. Scalene triangles have no equal sides and no equal angles.
How many angles are in 8 triangles?
1 triangle = 3 angles. 8 triangles = 8*3 = 24 angles!
Do triangles have at least one right angle?
Triangles can be classified by their sides or their angles. When classifying them by their angles, triangles are called: acute triangles - all three angles are acute (less than 90º) right triangles - one right angle (90º) and two acute angles obtuse triangles - one obtuse angle (larger than 90º) and two acute angles
How many angles are in four triangles?
1 triangle = 3 angles so 4 triangles = 4 x 3 = 12 angles unless some triangles are within others
