Draw a line AB=7.9 cm and draw perpendiculars at A and B. Are these two perpendiculars parallel to each other?

Draw a line segment PQ=8cm. Draw a perpendicular at P.

Draw a line AB. Using a compass, draw a line perpendicular to AB at the point B.

Two lines l and , are perpendicular to the same line n. Are l and m perpendicular to each other? Give reason for your answer.

Two straight lines are cut by a transversal. If the bisectors of a pair of co-interior angles are perpendicular to each other , prove the two straight lines are parallel to each other.

Prove that two lines perpendicular to the same line are parallel to each other.

Two vectors vecP and vecQ that are perpendicular to each other are :

Which of the following statements are true (T) and which are false (F)? Give reasons. (i)If two lines are intersected by a transversal, then corresponding angles are equal. (ii)If two parallel lines are intersected by a transversal, then alternate interior angles are equal. (iii)Two lines perpendicular to the same line are perpendicular to each other. (iv)Two lines parallel to the same line are parallel to each other. (v)If two parallel lines are intersected by a transversal, then the interior angle on the same side of the transversal are equal.