Because all the vertices are already joined together.
The formula for the diagonals of a polygon is: 1/2*(n2-3n) where n is the number of sides
A triangle has 3 sides and 1/2*(32-9) = 0
It is possible.
yes it is possible to do that.
It is impossible to have a triangle with 3 right angles. It is possible to draw a triangle with three right angles on the surface of a sphere: www.metacafe.com/watch/769025/270_degree_triangle_yes_3_right_angles
No
Yes!!
triangle and trrapezium
No, it is not.
It is possible.
yes it is possible to do that.
no
No
Yes!
No it is not possible to draw 1 triangle with 2 right angles because the angles in a triangle should equal to 180 degrees
No.
Yes
Yes.
Yes to both