An acute angled triangle, right angled triangle or obtuse angled triangle.
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All three sides (and therefore angles) in an equilateral triangle are the same measure. All three sides (and therefore angles) in a scalene triangle are different.
Acute scalene triangle
Yes, triangles have three angles since they have three sides.
Classifications by side length or comparison of angles and sides:scalene - no sides or angles equalisosceles - two sides and angles equal (congruent)equilateral - all sides and angles equal (all 60° angles)Classifications by included angles :right triangle - contains a 90° angle (right angle)oblique triangle - has no right angleacute triangle - contains all angles less than 90°obtuse triangle - contains one angle greater than 90°*Note that a triangle can be more than one type. A right triangle is a special case of either a scalene or isosceles triangle.
A triangle can be tiled because it has more than three sides and its angles are all different.