twinkl.com equilateral 3 equal sides 3 equal angles (60o) 60° 60° one angle is a right angle (90 ) a o s nu te po hy e Name the Triangle Flapbook 60° right angle two other angles add up to 90o 90° b the longest side is called the hypotenuse 80° scalene isosceles All sides are different all angles are different 2 equal sides 2 equal angles 60° 40°