3. A diagonal is any line segment that connects two non-consecutive vertices. So if we look at a triangle. ... There's no way for me to draw on a diagonal here because for this vertex both of these sides are consecutive. So there's no way for us to have any diagonals.
4. Learn the formal proof that shows the measures of interior angles of a triangle sum to 180°. Created by Sal Khan.
Answers & Comments
1. three sides
2. ?
3. A diagonal is any line segment that connects two non-consecutive vertices. So if we look at a triangle. ... There's no way for me to draw on a diagonal here because for this vertex both of these sides are consecutive. So there's no way for us to have any diagonals.
4. Learn the formal proof that shows the measures of interior angles of a triangle sum to 180°. Created by Sal Khan.
5. ?