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The triangle with side lengths 3, 4 and 5 form a triangle.

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Important Questions on Triangles

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New Mathematics Today Class 7>Chapter 17 - Triangles>Revision Exercise>Q 2

Which of the following is not a correct classification of △PQR?

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New Mathematics Today Class 7>Chapter 17 - Triangles>Revision Exercise>Q 3
In which of the following cases, the angles are not possibly the angles of a triangle.
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New Mathematics Today Class 7>Chapter 17 - Triangles>Revision Exercise>Q 4
The vertical angle of an isosceles triangle measures 5t-18° and one of the base angles measures 3t°.The value of t is
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7th ICSE
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New Mathematics Today Class 7>Chapter 17 - Triangles>Revision Exercise>Q 5

By how much is ∠a bigger than ∠b in the given figure?

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New Mathematics Today Class 7>Chapter 17 - Triangles>Revision Exercise>Q 6
A triangle with three unequal sides is called a scalene triangle.
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7th ICSE
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New Mathematics Today Class 7>Chapter 17 - Triangles>Revision Exercise>Q 6
The side opposite to right angle is called perpendicular.
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7th ICSE
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New Mathematics Today Class 7>Chapter 17 - Triangles>Revision Exercise>Q 6
The measure of each angle of an equilateral triangle is 60°.
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7th ICSE
IMPORTANT
New Mathematics Today Class 7>Chapter 17 - Triangles>Revision Exercise>Q 6
Sum of the angles of a triangle is more than 90°.