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= Concept Map =
= Concept Map =
__FORCETOC__
__FORCETOC__
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− ''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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− * '''Estimated Time'''
− * '''Materials/ Resources needed'''
− * '''Prerequisites/Instructions, if any'''
− * '''Multimedia resources'''
− * '''Website interactives/ links/ Geogebra Applets'''
− * '''Process (How to do the activity)'''
− * '''Developmental Questions (What discussion questions)'''
− * '''Evaluation (Questions for assessment of the child)'''
− * '''Question Corner'''
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− ===Activity No # ===
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Line 42: 1. Triangles on same base and between same parallels have equal area.
1. Triangles on same base and between same parallels have equal area.
− 2. Area of a triangle is half the product of its base and the corresponding altitude.
+ 2s . Area of a triangle is half the product of its base and the corresponding altitude.
3. Triangles on the same base and of equal area lie between the same parallels.
3. Triangles on the same base and of equal area lie between the same parallels.
===Notes for teachers===
===Notes for teachers===
− ''These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.''
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− * '''Estimated Time'''
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= Hints for difficult problems =
= Hints for difficult problems =
'''Here is a micro analysis of solution for a problem'''
'''Here is a micro analysis of solution for a problem'''
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= Math Fun =
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[[Category:Class 9]]
[[Category:Class 9]]
[[Category:Quadrilaterals]]
[[Category:Quadrilaterals]]
Concept Map Textbook Karnataka state textbook :Chapter 9
Additional Information These videos provide proofs of theorems related to triangle and parallelogram on the same base and between same parallels VIDEO VIDEO
2. Notes and solved problems (in Kannada) by Yakub Koyyur, GHS Nada, Belthangady Taluk, D.K.
ಸಮಾಂತರ ಚತುರ್ಭುಜಗಳು ಮತ್ತು ತ್ರಿಭುಜದ ವಿಸ್ತೀರ್ಣಗಳು
Useful websites Exercises on area of parallelograms and triangles
Solved examples for triangles on same base and between parallels
Reference Books NCERT mathematics- Chapter 9: Areas of parallelograms and triangles
Teaching Outlines Concept #1. Area of parallelograms on same base and between same parallels Learning objectives 1. Parallelograms on the same base and between same parallels are equal in area.
2. Area of a parallelogram is the product of its base and the corresponding altitude.
3. Parallelograms on the same base and having equal area lie between same parallels.
Notes for teachers These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.
Activity No # Concept #2. Area of triangles on same base and between same parallels Learning objectives 1. Triangles on same base and between same parallels have equal area.
2s. Area of a triangle is half the product of its base and the corresponding altitude.
3. Triangles on the same base and of equal area lie between the same parallels.
Notes for teachers Activity No # Hints for difficult problems Here is a micro analysis of solution for a problem
[geometry_problemsolving.odt here]
No
Explanation
Analysis
1
Drawing ABCD.Cyclic orderD above
2
AB=CD=4X
Propertiesof parallelogram
3
AD=BC=2X+1
Propertiesof parallelogram
4
AD=BC=2X+1
Propertiesof parallelogram
5
AD=BC=2X+1
Propertiesof parallelogram
6
AD=BC=2X+1
Propertiesof parallelogram
7
AD=BC=2X+1
Propertiesof parallelogram
8
AD=BC=2X+1
Propertiesof parallelogram
|}
Project Ideas Math Fun 