Mathematics — first biennium · Lesson
Quadrilateral classes are inclusive: a square is also a rectangle, a rhombus and a parallelogram.
Prerequisites: Parallelism and triangles
Goal: Classify quadrilaterals using an inclusive hierarchy of properties.
In this lesson: Classify quadrilaterals using an inclusive hierarchy of properties.
New concept: Quadrilateral classes are inclusive: a square also satisfies the definitions of rectangle, rhombus and parallelogram. In exercises, choose the most specific name first without forgetting the broader classes.
How to proceed: Do not treat the categories as disjoint: find the most specific property first and then remember the inclusions.
You can already assume: Parallelism and triangles.
Completed exercises: 0/5 · Correct on first attempt: 0
Do not treat the categories as disjoint: find the most specific property first and then remember the inclusions.
Data / situation: It has four right angles and four equal sides.
ConceptStep separates what is required from what is recommended or useful as reinforcement. Only required prerequisites block your progress.
Relationships: solid line = required · dashed line = recommended · dotted line = reinforcement.