Identifying and classifying quadrilaterals: square, rectangle, parallelogram, rhombus, trapezium, kite.
Where your child meets this in real life: Recognising quadrilateral shapes in windows, tiles, kites, and road markings
SEAGReady breaks classify quadrilaterals into 3 steps, taught in order so each skill builds on the last.
Identify squares and rectangles by their defining properties (4 right angles, side lengths)
Identify parallelograms and rhombuses by their properties (parallel sides, equal opposite angles)
Identify trapeziums and kites by their unique properties (one pair parallel, or two pairs of adjacent equal sides)
Three free sample questions from our classify quadrilaterals course. Every question comes with a full explanation, and hints that guide without giving the answer away.
Aoife is laying floor tiles in her hallway. One tile has 4 right angles and sides measuring 25 cm, 25 cm, 25 cm, and 25 cm. Is this tile a square or a rectangle?
Answer: B. Square
Step 1: Check the angles The tile has 4 right angles (90 degrees each). Both squares and rectangles have 4 right angles. Step 2: Check the sides All four sides are equal: 25 cm each. A square has all 4 sides equal. The tile is a square because it has 4 right angles and all sides are equal.
Stuck? Start here: First, check the angles. How many right angles does this shape have?
Caitlin draws a quadrilateral for art class. It has opposite sides parallel, all sides 6 cm, but NO right angles. What type of quadrilateral is this?
Answer: C. Rhombus
Step 1: Check for right angles The shape has NO right angles. So it is NOT a square or rectangle. Step 2: Check parallel sides Opposite sides are parallel. Step 3: Check side lengths All 4 sides are equal (6 cm each). A rhombus has: - Opposite sides parallel - All sides equal - NO right angles required The shape is a rhombus.
Stuck? Start here: First, check for right angles. Does this shape have any?
Ciara sees a quadrilateral with exactly ONE pair of parallel sides. What type of quadrilateral is this?
Answer: C. Trapezium
The shape has exactly ONE pair of parallel sides. This is a trapezium. Key difference: - Trapezium: exactly ONE pair of parallel sides - Parallelogram, rectangle, square, rhombus: all have TWO pairs of parallel sides
Stuck? Start here: How many pairs of parallel sides does this shape have?
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
Ciara is laying new tiles in her kitchen. One tile has 4 right angles and sides measuring 30 cm, 30 cm, 30 cm, and 30 cm.
Is this tile a square or a rectangle?
30 cm, 30 cm, 30 cm, 30 cm
Step 1 of 4
Ciara is laying new tiles in her kitchen. One tile has 4 right angles and sides measuring 30 cm, 30 cm, 30 cm, and 30 cm.
Is this tile a square or a rectangle?
The tile is a square because it has 4 right angles and all sides are equal.
The key insight: A square is a special rectangle where all 4 sides are equal!
Watch out: Saying a square is not a rectangle. A square IS a rectangle because it has 4 right angles and opposite sides equal.
These are the misconceptions we see most often in classify quadrilaterals, including the ones our practice questions are specifically designed to catch.
Struggling with classify quadrilaterals? The real gap is often in one of these earlier topics.
SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.