A
What is the term for a three-dimensional figure?
Solid
What is the term for the point where three or more surfaces meet?
Vertex
What is the name for the space occupied by an object?
Positive
What is the name for the technique of breaking complex shapes into simple geometric forms?
Sketching
What is the term for the intersection of two surfaces?
Edge
What type of polyhedron has equal regular polygon faces?
Regular
What is the shape of a torus?
Doughnut
What type of line represents hidden edges?
Dashed
What type of drawing represents a 3D object on a 2D plane?
Pictorial
What type of drawing is a graphical representation of a three-dimensional object on a two-dimensional plane.
Axonometric
What are the four principal types of projections?
Multiview, Axonometric, Oblique, Perspective
How many bases does a prism have?
Two
What is the purpose of dimensioning in technical drawings?
To relay a realistic sense of scale
What is an oblate or prolate ellipsoid shaped like?
Egg
How should horizontal lines be drawn in freehand sketching?
Left to right with a free and easy wrist movement
What are the essential elements of a technical drawing?
Accuracy, Speed, Legibility, Neatness
What is the main function of technical drawing techniques?
To visually convey information with accuracy
How do contour lines help in sketching?
They outline the shape of an object and separate it from surrounding space
What is an isometric projection?
A pictorial drawing where the three principal axes are equally foreshortened
Why is it important to use construction lines in sketching?
To structure and define complex shapes before finalizing the drawing
What is a perspective view used for?
To show how an object appears from a specific viewpoint with depth perception
How can you improve your freehand straight-line sketching?
Practice holding the pencil correctly and drawing with fluid wrist and arm movements
What are two common types of pictorial sketches?
Isometric and Perspective
Why is neatness important in technical drawings?
To ensure accuracy and legibility in communication
What is the difference between a prism and a pyramid?
A prism has two parallel bases; a pyramid has one base and triangular sides converging to a vertex