Question

Isaac and Betty are describing two triangles.

Isaac says, ”My triangle has exactly two sides equal.”
Betty says, ”My triangle has all sides unequal.”

Which triangles did Isaac and Betty describe?
Answer
Isaac described a scalene triangle, and Betty described a right triangle.
Isaac described a right triangle, and Betty described an equilateral triangle.
Isaac described an equilateral triangle, and Betty described a right triangle.
Isaac described an isosceles triangle, and Betty described a scalene triangle.

Answer 1

last one... those are the definitions to isosceles and scalene triangles...:)