関連ワード:
does a triangle have 3 equal sides can a triangle have 3 equal sides does a triangle have 3 congruent sides does a triangle need 3 equal sides does a scalene triangle have 3 equal sides does a right triangle have 3 equal sides does a triangle always have 3 equal sides can a right triangle have 3 equal sides does a equilateral triangle have 3 congruent sides can a isosceles triangle have 3 equal sides
