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.
COUNT THEM! There are three ding dong!
edit:
There can be 3, 2 or no equal sides/angles
Thanks for not deleting my answer
A triangle has 3 interior angles that add up to 180 degrees
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A triangle has three sides.
A triangle has three sides.
A triangle has got 3 sides to it & that's why it's called a triangle. Three sides.
By definition, a triangle has three sides.
Any triangle has three sides, whether it is a right triangle or not.
3 sides - such is the definition of triangle. Every triangle of any type has three sides.
3 sides it is still a triangle but all sides are uneven
a scalene triangle has no sides equal
A scalene triangle has no equal sides.
3. every triangle have three sides
It has 3 sides
An heptagon has 7 sides and a triangle has 3 sides