Point or multiple points is/are in a triangle??

Check whether a point or multiple points is/are in a triangle with three corners

 Points = [x, y]; 
 Triangle = [x1, y1; x2, y2; x3, y3]

Return true or false for each point tested.

[Star Strider]

Consider the triangle a polygon.

Search for functions that will give you the result you want with polygons.

Answer 1

[Bruno Luong]

tf = inpolygon(Points(:,1),Points(:,2),Triangle(:,1),Triangle(:,2))

Answer 2

[Ze-Zheng Wu]

isinterior(polyshape(Triangle), Points);

see polyshape and isinterior for more information.