Maths around us!

• What does these remind us?
• Rectangles only? How about naming 3-dimensional objects like cylinder?
• Of course, not forgetting lines of symmetry, reflection...

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• Line of symmetry
• Shapes - rectangles? semicircles? quadrants?

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• Circles... Straight Lines... Right angles... Acute angles
• What else do they offer?

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• Windows with security bars! No, no... It's rectangles and parallel lines!
• How many sets of parallel lines are there?
• How many lines of symmetry are there?
• Rhombus! Rhombus! Triangles! Triangles!
• What make up by What? Triangles by Rhombus? Rhombus by Triangles?

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• Do these look familiar? Looks like the deco to the old houses in hutongs in Beijing?
• No, no, this is not from China... It's found at Katong in Singapore!
• It's Art? It's Maths!
• Line(s) of Symmetry? Centre of Rotation? Reflection?
• How many "L"s are there?
• How about right angles?

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• What shapes can you find here?
• How many (of each shape) are there?
• Symmetry!!! Where's the line of symmetry?

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• How many rectangles here comply to the propertes of rectangle?
  

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• Angles, angles everywhere! Have you spotted the marked angles?
• What angles can you find here?
• Acute angle? Right-angle? Obtuse angle? Straight line angle? Reflex angle?
• Which angles are the same? What angle property can we apply here?
• What about shapes?
• Triangles? Circles? What other polygons?
  

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