LEARN · EXPLAIN · REVISE

Recover the actual depth from its half-scale drawn length.

Read the idea, work independently, then explain what changed.

TOPIC 01

Introduction to solid geometry: mixed assessment

A mixed assessment: identify the method, justify it and revise your reasoning.

Use one hint at a time. A correction explains what changed, not just the final answer.

01 / Foundation#Your turn

d'=8

Skills and prerequisite lessons

Working and explanation

BUILD THE REASONING

Hint 1

Distinguish the actual spatial object from the stated oblique drawing convention.

Hint 2

Undo the one-half scale factor.

Worked solution

Distinguish the actual spatial object from the stated oblique drawing convention.
Calculate or simplify this relation.
$d=2d'=16$
The same recovery is not applied to axes drawn at full scale.

The requested value is 16.

Checks and common pitfalls: The same recovery is not applied to axes drawn at full scale.

Think first. Reveal a hint when the class is ready.

Teacher preparation and assessment