A closed figure made by joining three non-collinear points is called
Rectangle
Triangle
Square
Hexagon
A closed figure which has three sides is called a triangle. Three non-collinear points are joined by line segments to form a triangle
There are 8 non-collinear points. How many triangles can be drawn by joining these points?
There are 20 non-collinear points in a plane. How many (a) straight lines (b) triangles can be drawn by joining these points?