True or False :
The XY-plane and the YZ-plane meet in the x-axis.

True or false The line x=y=z lies in the plane x-2y+z-1=0.

True/False: A circle divides the plane into three parts.

State whether the following statements are true or false Two lines in a plane always intersect at point.

A(3,0) and B(6,0) are two fixed points and U (x_1 ,y_1) is a variable point on the plane , AU and BU meet the y - axis at C and D respectively and AD meets OU at V. Prove that CV passes through (2,0) for any position of U in the plane .

True/false A point lies on the y-axis in the same quadrant form the x-axis, its coordinate are (3,0)

What is the equation of the xy-plane?

True or false The projection of the point (alpha,beta,gamma) on the XOY plane is (0,0,gamma)

If from a point P(a,b,c) perpendicular PA and PB are drawn to yz and zx-planes, find the vector equation of the plane OAB.

True or False statements: Tangent to the curve y = x^2 at x = 0 is parallel to the x-axis.

Read each statement below carefully and state with reasons, if it is true or false :- Three vectors not lying in a plane can never add up to give a null vector.