PLTW IED FINAL STUDY GUIDE 2026
COMPREHENSIVE QUESTIONS WITH
SOLUTIONS GRADED A+
⩥ 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.
COMPREHENSIVE QUESTIONS WITH
SOLUTIONS GRADED A+
⩥ 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.
