C.4.1—Angles in regular structures

Use angles in regular two- and three-dimensional structures, including interpreting force diagrams.

Use c.4.1—angles in regular structures to connect the rule to the data and decision in the question.

This matters because c.4.1—angles in regular structures determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply c.4.1—angles in regular structures to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: C.4.1—Angles in regular structures is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.