A particular convex polygon with seven sides has exactly one right angle. How many diagonals does this seven-sided polygon have?
Question:
A particular convex polygon with seven sides has exactly one right angle. How many diagonals does this seven-sided polygon have?
Answer:
Let's think step by step.

user
14
A particular convex polygon with seven sides has exactly one right angle. How many diagonals does this seven-sided polygon have?
train