Special triangles. Mathematics CBSE, Class 7: lessons, tests, tasks.

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1.	Special triangles
2.	Concept of right triangles
3.	The Pythagorean theorem
4.	Baudhayana (Pythagoras) theorem

1.	Calculate sum of interior angles and perimeter of equilateral triangle Difficulty: easy	3
2.	Calculate the interior angle of isosceles triangle Difficulty: easy	2
3.	Select the following relation which is true. Difficulty: easy	3
4.	Determine the angle in isosceles triangle Difficulty: easy	3
5.	Find the angle of isosceles triangle Difficulty: medium	3
6.	Estimate the interior angle of a triangle Difficulty: medium	4
7.	Determine the side of the right triangle Difficulty: medium	4
8.	Evaluate the base of an isosceles triangle Difficulty: medium	4
9.	Calculate the distance travelled Difficulty: medium	4
10.	Solve the problem on isosceles triangles Difficulty: hard	5
11.	Calculate the perimeter of the rectangle Difficulty: hard	5
12.	Predict the width of the rectangular object Difficulty: hard	4

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Training test

Difficulty: medium

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Methodical recommendation

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