Question 5
In the figure below, how many triangles can be formed using any three points as the vertices?
Editorial convention: Interpret the intended dot pattern as a regular 3-by-3 rectangular grid.
Original choices: A: 16; B: 56; C: 64; D: 9.
Answer-format convention: Give the exact result as a short answer; the source choices are retained above.
Editorial convention: Interpret the intended dot pattern as a regular 3-by-3 rectangular grid.
Original choices: A: 16; B: 56; C: 64; D: 9.
Answer-format convention: Give the exact result as a short answer; the source choices are retained above.