Question

An architect plans to make a drawing of the room of a house. The segment LM represents the ceiling of the room. He wants to construct a line passing through Q and perpendicular to side LM to represent a wall of the room. He uses a straightedge and compass to complete some steps of the construction as shown.

Answer 1

Which of these is likely to be his next step in constructing the perpendicular line?

Fix the compass at Q and draw an arc below the line.

Fix the compass at L and draw an arc above the line.

Without changing the width and position of the compass, draw an arc between L and M.

Without changing the width of the compass, place the compass at M and draw an arc.

Answer 2

'perpendicular from an external point' construction

Answer 3

there is no hope in dope

Answer 4

http://www.mathopenref.com/constperpextpoint.html

Answer 5

Thanks (: @ganeshie8

Answer 6

anytime

Answer 7

hahaha thanks not-a-cop