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The Triangle & its Properties Video Lecture - & Pedagogy Paper 2 for CTET
FAQs on The Triangle & its Properties
| 1. What are the three types of triangles based on their angles? |  |
Ans. The three types of triangles based on their angles are acute triangles (all angles less than 90 degrees), obtuse triangles (one angle greater than 90 degrees), and right triangles (one angle equal to 90 degrees).
| 2. How do you find the area of a triangle? | |
Ans. The area of a triangle can be calculated using the formula: Area = 1/2 x base x height, where the base is the length of the triangle's bottom side and the height is the perpendicular distance from the base to the opposite vertex.
| 3. What is the Pythagorean Theorem and how is it used in triangles? | |
Ans. The Pythagorean Theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. It is commonly used to find missing side lengths in right triangles.
| 4. How can you determine if a triangle is equilateral, isosceles, or scalene? | |
Ans. An equilateral triangle has all three sides of equal length, an isosceles triangle has at least two sides of equal length, and a scalene triangle has no sides of equal length. You can determine the type of triangle by comparing the lengths of its sides.
| 5. Can you have a triangle with sides of lengths 3, 4, and 7? | |
Ans. No, a triangle cannot have sides of lengths 3, 4, and 7 because the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. In this case, 3 + 4 is not greater than 7, so it does not satisfy the triangle inequality theorem.
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Apr 19, 2026 Last updated
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