Question: How many different types of triangles are there?
Answer : According to the extremely handy
Math League site in our
Geometry category, a triangle is any three-sided polygon. All of the angles in a triangle add up to 180 degrees. There are six main types of triangles: equilateral (all sides have equal length), isosceles (two sides have equal length), scalene (all three sides have different lengths), acute (every angle is acute, or less than 90 degrees), obtuse (one angle is greater than 90 degrees), and right (one angle is exactly 90 degrees). Check out these
illustrations to get a better idea of how they look.
