I `|veca|=3 nd -4lekle1,` then what can you say about |kaveca|` ?

If veca. vecb=0, then what can you say about veca and vecb?

The length of a rectangle is three times the breadth. If the minimum perimeter of the rectangle is 160 cm, then what can you say about breadth ?

If the circumcentre and the incentre of a triangle coincide, then what can you say about the triangle ?

If two lines are parallel, then what can you say about the pairs of corresponding angles formed by their transversal ?

If two bodies are attracting each other, then what can you say about their charge?

If the x and y co-ordinates of a point are equal, then what can you say about the position of the point.