10th grade Perpendicularity

Two lines a and b are perpendicular to each other if the angle between them is (a)   degree

If one of two parallel lines is perpendicular to a third line, the other is


(a)  

If a line is (a)   to two intersecting lines lying in a plane then it is perpendicular to the plane.

If a line intersects a plane but not perpendicular to the plane it is called an

A line is said to be perpendicular to a plane if it is perpendicular to ___ line in this plane

If one of two (a)   lines is perpendicular to a plane then the other line is also perpendicular to the same plane.

Two lines perpendicular to the same plane are (a)  

If a line AC perpendicular to a plane α, find the angle ∠ABD

(a)  

ΔABC is an isosceles right triangle such that AB = BC = 4 cm. P is a point not in plane ACB

and M is the midpoint of AC. If PB ⊥ AB, PB ⊥ BC and PB = 2√2 cm, find PM

If a line is perpendicular to a plane and parallel to another plane, these planes are (a)