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Quadrilaterals
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1. Characteristics of Quadrilaterals
- What are the characteristics of squares and rectangles?
- What are the characteristics of rhombuses?
- What are the characteristics of parallelograms?
- What are the characteristics of trapeziums?
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2. Constructing Quadrilaterals
- Constructing Quadrilaterals by Four Sides (2014)
- Drawing quadrilaterals on the grid or the pinboard
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3. Classifying Quadrilaterals
- Classifying Quadrilaterals
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Quadrilaterals
Anthony OR 柯志明, Jan 27, 2014
Table of Contents
- Characteristics of Quadrilaterals
- What are the characteristics of squares and rectangles?
- What are the characteristics of rhombuses?
- What are the characteristics of parallelograms?
- What are the characteristics of trapeziums?
- Constructing Quadrilaterals
- Constructing Quadrilaterals by Four Sides (2014)
- Drawing quadrilaterals on the grid or the pinboard
- Classifying Quadrilaterals
- Classifying Quadrilaterals
Constructing Quadrilaterals by Four Sides (2014)
Answer the following questions using the applet.
1. Can you make a quadrilateral of four sides being 2 cm, 3 cm, 3 cm and 9 cm? Why or why not?
2. If a quadrilateral has four equal sides, what are its possible shapes?
3. If a quadrilateral has two pairs of equal opposite sides, what are its possible shapes?
4. If a quadrilateral has two pairs of equal adjacent sides, what is its shape?
5. Make the trapezium of the four sides (from top to bottom) being:
(a) 4 cm, 4 cm, 4 cm, 6 cm; (b) 4 cm, 4 cm, 5 cm, 6 cm;
(c) 4 cm, 3 cm, 5 cm, 7 cm; (d) 3 cm, 3 cm, 5 cm, 7 cm.
What is the characteristic of trapeziums?
Anthony Or, GeoGebra Institute of Hong Kong.
Classifying Quadrilaterals
Classify quadrilaterals A to T by coloouring. (Click a quadrilateral at the right, then click those quadrilaterals A to T in the same class.)
Drag and rotate (the red point) the ruler to measure lengths and right angles.
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