Difference between revisions of "A Trapezium and its properties"
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# A quadrangle with only two opposite sides parallel is called a trapezium, or trapezoid. | # A quadrangle with only two opposite sides parallel is called a trapezium, or trapezoid. | ||
# The parallel sides are called the bases of the trapezium and the other two sides are called the legs or the lateral sides. | # The parallel sides are called the bases of the trapezium and the other two sides are called the legs or the lateral sides. | ||
| − | # If the legs are equal in length, then this is an isosceles | + | # If the legs are equal in length, then this is an isosceles trapezium. |
| − | # The distance between the bases is called height of | + | # The distance between the bases is called height of trapezium. |
===Notes for teachers=== | ===Notes for teachers=== | ||
===Activity No # === | ===Activity No # === | ||
Revision as of 15:06, 17 December 2013
| Philosophy of Mathematics |
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Concept # A Trapezium and its properties
Learning objectives
- A quadrangle with only two opposite sides parallel is called a trapezium, or trapezoid.
- The parallel sides are called the bases of the trapezium and the other two sides are called the legs or the lateral sides.
- If the legs are equal in length, then this is an isosceles trapezium.
- The distance between the bases is called height of trapezium.
Notes for teachers
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Concept #2. Measurements in Trapezium
Learning objectives
- The trapeium contains two parallel sides and two non-parallel sides.
- The area of trapezium is found by viewing it as a parallelogram.
- The area of trapezium is 1/2(a+b)h where a and b are its parallel sides and h is the perpendicular distance between them.
- The perimeter of a trapezium is obtained by sum of its 4 sides.
Notes for teachers
- The area of most figures can be expressed in terms of its dimensions.
- The area of most composite figures can be calculated using the area of primary figures.
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Concept # 3.Construction of Trapezium
Learning objectives
Notes for teachers
Activity No #
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- Question Corner
Activity No #
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- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Concept # 4. Isosceles trapezium
Learning objectives
Notes for teachers
Activity No #
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- Evaluation
- Question Corner
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
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