Conditions for line to intersect

Two lines intersect

Condition for a line to lie in a plane

Condition of line to be parallel perpendicular and intersecting

Read the graph carefully: Write the algebraic condition, when two lines are intersecting lines.

Condition of intersection of line and ellipse

Find the condition that the lines vec r=vec a+t(vec b xxvec c),vec r=vec b+p(vec c xxvec a) may intersect.Accepting that condition,find the point of intersection.

Condition for concurrency of three lines

From Figure,name All pairs of parallel lines. all pairs of intersecting lines.lines of whose point of intersection in P lines whose point of intersection in C lines whose point of intersection in R collinear points.

Form Fig.,write all pairs of parallel lines.all pairs of intersection lines.lines whose point of intersection is l. lines whose point of intersection is D .lines whose point of intersection is E .lines whose point of intersection is A. collinear points