LEARN · EXPLAIN · REVISE

A vertical edge has actual length 10 and vertical scale one. Find its 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 / Standard#Your turn

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

Read the scale assigned to the vertical axis.

Worked solution

Distinguish the actual spatial object from the stated oblique drawing convention.
Calculate or simplify this relation.
$h'=1\cdot10=10$
The half-depth rule applies only to the specified receding direction.

The requested value is 10.

Checks and common pitfalls: The half-depth rule applies only to the specified receding direction.

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

Teacher preparation and assessment