How to use UIBezierPath draw

UIBezierPathDemo.m

//Begin the path
UIBezierPath *path = [[UIBezierPath alloc] init];

//Move around, add lines or arcs to the path
[path moveToPoint:CGPointMake(75, 10)];
[path addLineToPoint:CGPointMake(160, 150)];
[path addLineToPoint:CGPointMake(10, 150]);

//Close the path
[path closePath];

//stroke/fill it
[[UIColor greenColor] setFill];
[[UIColor redColor] setStroke];
//draw 
[path fill]; [path stroke];

//set linde width
path.lineWidth = 2.0;

//draw round rectangle
UIBezierPath *roundedRect = [UIBezierPath bezierPathWithRoundedRect:(CGRect)bounds cornerRadius:(CGFloat)radius];
//draw oval
UIBezierPath *oval = [UIBezierPath bezierPathWithOvalInRect:(CGRect)bounds];
//clip
[roundedRect addClip];