Check if a point is in a triange

Write a function to return a boolean indicating if the given input point is in a triangle covered by a given set of points. For example, check if the point 2,3 is inside the triangle formed by (0,0) (0,30) and (20,0) Input x,y co-ordinates of 3 points covering the traingle and x,y co-ordinates of one test point all in one line separated by space Eg: 0 0 10 20 20 0 10 20 Output True indicati