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| ===== Activities ===== | | ===== Activities ===== |
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− | ====== [[Formation of a triangle]]: A plane figure formed by three intersecting lines. ====== | + | ====== [[Formation of a triangle]] ====== |
| + | A plane figure formed by three intersecting lines. |
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− | ====== [[Measures in triangle|Elements and measures in triangle]]: Parameters that are associated and measured in a triangle. ====== | + | ====== [[Measures in triangle|Elements and measures in triangle]] ====== |
| + | Parameters that are associated and measured in a triangle. |
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− | ====== [[Interior and exterior angles in triangle]]: Angles that are formed when a triangle is formed. ====== | + | ====== [[Interior and exterior angles in triangle]] ====== |
| + | Angles that are formed when a triangle is formed. |
| [[Category:Triangles]] | | [[Category:Triangles]] |
| [[Category:Class 8]] | | [[Category:Class 8]] |
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| ===== Activities ===== | | ===== Activities ===== |
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− | ====== [[Types of triangles based on sides]]: Formation of a triangle depends on measures of sides. ====== | + | ====== [[Types of triangles based on sides]] ====== |
| + | Formation of a triangle depends on measures of sides. |
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− | ====== [[Types of triangles based on angles]]: Formation of a triangle depends on measures of angles. ====== | + | ====== [[Types of triangles based on angles]] ====== |
| + | Formation of a triangle depends on measures of angles. |
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| ==== Concept 3: Theorems and properties ==== | | ==== Concept 3: Theorems and properties ==== |
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| ===== Activities ===== | | ===== Activities ===== |
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− | ====== [[Angle sum property]] : Relation between angles formed inside a triangle ====== | + | ====== [[Angle sum property]] ====== |
| + | Relation between angles formed inside a triangle |
| + | |
| + | ====== [[Relation between interior and exterior angles in triangle|Exterior angle theorem]] ====== |
| + | Relation between angles formed inside a triangles and angles outside a triangle |
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− | ====== [[Relation between interior and exterior angles in triangle|Exterior angle theorem:]] Relation between angles formed inside a triangles and angles outside a triangle ======
| |
| ==== Concept 4: Construction of triangles ==== | | ==== Concept 4: Construction of triangles ==== |
| Constructing geometric shapes to precision using a scale and a compass helps in understanding of properties of the shape. Constructing geometric shapes with minimum number of parameters enhances thinking skills. | | Constructing geometric shapes to precision using a scale and a compass helps in understanding of properties of the shape. Constructing geometric shapes with minimum number of parameters enhances thinking skills. |
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| ===== Activities ===== | | ===== Activities ===== |
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− | ====== [[Construction of a triangle with 3 sides|Construction of a triangle with three sides:]] Construction of a triangle based on the SSS congruence rule ====== | + | ====== [[Construction of a triangle with 3 sides|Construction of a triangle with three sides]] ====== |
| + | Construction of a triangle based on the SSS congruence rule |
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− | ====== [[Construction of a triangle with two sides and included angle|Construction of a triangle with two sides and an angle]]: Construction of a triangle based on SAS congruence rule ====== | + | ====== [[Construction of a triangle with two sides and included angle|Construction of a triangle with two sides and an angle]] ====== |
| + | Construction of a triangle based on SAS congruence rule |
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− | ====== [[Construction of a triangle with two angles and included side]]: Construction of a triangle based on ASA congruence rule ====== | + | ====== [[Construction of a triangle with two angles and included side]] ====== |
| + | Construction of a triangle based on ASA congruence rule |
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− | ====== [[Construction of a right triangle with a side and hypotenuse|Construction of a right angled triangle]]: Construction of a triangle based on RH congruence rule ====== | + | ====== [[Construction of a right triangle with a side and hypotenuse|Construction of a right angled triangle]] ====== |
| + | Construction of a triangle based on RH congruence rule |
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− | ====== [[Construction of a triangle with perimeter and base angles]]: Construction on a triangle with give parameters using SAS congruence rule ====== | + | ====== [[Construction of a triangle with perimeter and base angles]] ====== |
| + | Construction on a triangle with give parameters using SAS congruence rule |
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− | ====== [[Construction of a triangle with side, angle and sum of other two sides|Construction of a triangle with a side, an angle and sum of two sides]]: Construction on a triangle with give parameters using SAS congruence rule ====== | + | ====== [[Construction of a triangle with side, angle and sum of other two sides|Construction of a triangle with a side, an angle and sum of two sides]] ====== |
| + | Construction on a triangle with give parameters using SAS congruence rule |
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− | ====== [[Construction of a triangle with side, angle and difference of other two sides|Construction of a triangle with a side, an angle and difference to two sides:]] Construction on a triangle with give parameters using SAS congruence rule ====== | + | ====== [[Construction of a triangle with side, angle and difference of other two sides|Construction of a triangle with a side, an angle and difference to two sides]] ====== |
| + | Construction on a triangle with give parameters using SAS congruence rule |
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| ==== Concept 5: Concurrency in triangles ==== | | ==== Concept 5: Concurrency in triangles ==== |