B.4.1—Angles and regular structures

Recognise angles and shapes in regular two- and three-dimensional structures, including molecular shapes and bond angles.

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

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

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

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