Lesson 1: A plane & a normal to a plane

A normal to a plane is a straight line that is ____________ to any line on the plane.

• Parallel

• Perpendicular

A plane is the flat surface of an object. Which of the following are 3 types of planes?

• Horizontal plane

• Vertical plane

• Inclined plane

• Curve surface

State 2 normals for plane EFGH.

• AF

• BG

• CH

• DE

State 2 normals to the plane QRTU.

• PV

• WT

• SW

• PU

Which lines are normal to plane GFBC?

i. FB

ii. HG

iii. HD

• i only

• ii only

• iii only

• ii and iii only

• all

The diagram shows a right prism. Which of the following is a normal to the plane PQRS?

• PQ

• QS

• UQ

• PS