equilateral triangle- all sides the same length
isosceles triangle- 2 sides the same length
scalene triangle- no sides the same length
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They are: equilateral, isosceles, obtuse, scalene and right angle triangles
no Not every triangle has to have one. Some triangles may be acute, meaning that none of their angles are over 90. Some triangles may be right, meaning that there is one right angle. Although some triangles may be obtuse, not all triangles are obtuse.
4 What are the 4 kinds? I count 2 kinds: the base is a square, and the other 4 faces are all triangles.
right triangle. obtuse triangle. acute triangle