PLTW IED COMPREHENSIVE EXAM STUDY
GUIDE WITH COMPLETE SOLUTIONS
●● Invention
Answer: A new product, system, or process that has never existed
before, created by study and experimentation.
●● Design Brief
Answer: A written plan that identifies a problem to be solved, its criteria,
and its constraints. The design brief is used to encourage thinking of all
aspects of a problem before attempting a solution.
●● Design Process
Answer: A systematic problem-solving strategy, with criteria and
constraints, used to develop many possible solutions to solve a problem
or satisfy human needs and wants and to winnow (narrow) down the
possible solutions to one final choice.
●● Construction Line
Answer: Thin lines that serve as guides while sketching or drawing.
●● Hidden Line
, Answer: A line type that represents an edge that is not directly visible,
because it is behind or beneath another surface.
●● Isometric Sketch
Answer: A form of pictorial sketch in which all three drawing axes form
equal angles of 120 degrees with the plane of projection.
●● Multiview Drawings
Answer: Views of an object projected onto two or more orthographic
planes.
●● Object Line
Answer: A heavy solid line used on a drawing to represent the outline of
an object.
●● Oblique Sketch
Answer: A type of sketch involving a combination of a flat, orthographic
front with depth lines receding at a selected angle, usually 45 degrees.
●● Orthographic Projection
Answer: A method of representing three-dimensional objects on a plane
having only length and breadth. Also referred to as Right Angle
Projection.
GUIDE WITH COMPLETE SOLUTIONS
●● Invention
Answer: A new product, system, or process that has never existed
before, created by study and experimentation.
●● Design Brief
Answer: A written plan that identifies a problem to be solved, its criteria,
and its constraints. The design brief is used to encourage thinking of all
aspects of a problem before attempting a solution.
●● Design Process
Answer: A systematic problem-solving strategy, with criteria and
constraints, used to develop many possible solutions to solve a problem
or satisfy human needs and wants and to winnow (narrow) down the
possible solutions to one final choice.
●● Construction Line
Answer: Thin lines that serve as guides while sketching or drawing.
●● Hidden Line
, Answer: A line type that represents an edge that is not directly visible,
because it is behind or beneath another surface.
●● Isometric Sketch
Answer: A form of pictorial sketch in which all three drawing axes form
equal angles of 120 degrees with the plane of projection.
●● Multiview Drawings
Answer: Views of an object projected onto two or more orthographic
planes.
●● Object Line
Answer: A heavy solid line used on a drawing to represent the outline of
an object.
●● Oblique Sketch
Answer: A type of sketch involving a combination of a flat, orthographic
front with depth lines receding at a selected angle, usually 45 degrees.
●● Orthographic Projection
Answer: A method of representing three-dimensional objects on a plane
having only length and breadth. Also referred to as Right Angle
Projection.
