How many sides of triangle?

Answer 1

There are triangles that are named for relationships of their side lengths: scalene has no equal sides Isosceles has 2 equal sides, and equilateral has all 3 sides equal. Then there are names for relationship of angles. Acute has all 3 angles less than a right angle (90°). Right has one angle is a right angle (90°). Obtuse has one angle greater than 90° but less than 180°.

An equilateral triangle has all three angles 60°, so it is also acute. An acute triangle can be scalene or isosceles, as well. A right triangle can also be either scalene or isosceles. An obtuse triangle can also be scalene or isosceles.

Answer 2

COUNT THEM! There are three ding dong!

edit:

There can be 3, 2 or no equal sides/angles

Thanks for not deleting my answer

Answer 3

A triangle has 3 interior angles that add up to 180 degrees

Answer 4

3

Answer 5

9