An isometric sketch uses width and depth lines at 45° from the horizontal.

• True

• False

An orthogonal plane is at a perpendicular angle to the figure.

• True

• False

Which of the following best describes an isometric sketch?

• A sketch that shows only the front view of an object

• A technical drawing with dimensions included

• A sketch used only for artistic purposes

• A 3D sketch showing width, depth, and height

What symbol is used to indicate the diameter of a circle?

• Ø

• R

• D

• O

Why is it important to align orthographic views correctly when creating a multiview drawing?

• To save paper

• To ensure accurate representation of the object

• To make the drawing more colorful

• To reduce the number of views needed

What does the symbol "R" typically indicate in a technical drawing?

• Radius

• Diameter

• Depth

• Right view

Which type of line is used to represent features that are not directly visible in a drawing?

• Object line

• Hidden line

• Dimension line

• Extension line

What is the purpose of an extension line in a technical drawing?

• To extend dimensions away from the object

• To show hidden features

• To indicate the center of a circle

• To mark construction guidelines

Which type of line is used to connect a specific note or dimension to a feature on a drawing?

• Leader line

• Object line

• Center mark

• Extension line

What is a center mark used for in technical drawings?

• To indicate the center of a hole or arc

• To show the visible edge

• To extend dimensions

• To hide features