Mason is building a bookshelf and wants to make sure the shelves meet the sides at a perfect 90-degree angle. What is the term used to describe two lines that are 90 degrees from each other?

• Perpendicular

• Concentric

• Tangent

• Inscribed

• Circumscribed

Luna is looking at two train tracks that run side by side and never meet, no matter how far they go. What is the term used to describe these two tracks?

• Parallel

• Perpendicular

• Concentric

• Tangent

• Inscribed

Olivia is shopping for pencils and wants the one with the softest lead for sketching. Which lead should she choose?

• HB

• 2H

• 3H

• 6H

Ethan is shopping for pencils and wants the one with the hardest lead for technical drawing. Which lead should he choose?

• HB

• 2B

• 5B

• 2H

• 3H

Aiden should use a medium (2H) in lineweight in his technical drawing to label the dimensions.

• TRUE

• FALSE

Benjamin is preparing a technical drawing and needs to indicate the outlines of an object. In which of the following line weights should Benjamin draw the object lines (also called visible lines)?

• Thick and dark HB

• Thin and light 3H

• Medium thick and medium dark 2H

Rohan is preparing a technical drawing for his engineering class. He needs to indicate measurements clearly on his drawing. In which of the following line weights should Rohan draw the dimension lines and dimensions?

• Medium thick and medium dark 2H

• Thick and dark HB

• Thin and light 3H