Crossword Puzzle Types of trianglesOnline version In this game you can learn about types of triangles by Melkis Mora Carvajalino 1 It is a polygon, which has three sides, three angles, three vertices 2 Triangle that has all three angles less than 90° 3 A triangle that has one angle that measures exactly 90° 4 A triangle that has one angle that measures more than 90° 5 A triangle that has all three sides of different lengths 6 A triangle that has two sides of the same length and the third side of a different length 7 A triangle that has all three sides of the same length 6 2 4 5 3 1