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Explain the following terms: Triangle...

Explain the following terms: Triangle                       (ii) parts or elements of a triangle Scalene triangle           (iv) isosceles triangle Equilateral triangle      (vi) acute triangle Right triangle               (viii) obtuse triangle Interior of a triangle      (x) exterior of a triangle.

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A Scalene triangle has

A triangle having all sides of different length is known as scalene triangle (b) isosceles triangle an equilateral triangle (d) an acute triangle

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A triangle whose two sides are equal is known as acute triangle (b) an isosceles triangle a scalene triangle (d) a right triangle

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If in an isosceles triangle, each of the base angles is 40°, then the triangle is

A triangle whose on two sides are equal is called an acute triangle (b) a scalene triangle an isosceles triangle (d) an equilateral triangle

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Discussion OF work sheet -1 || Triangle definition || Type OF Triangle|| Scalene Triangle Isosceles triangle || Equilateral triangle|| Acute angle triangle|| Right angle traingle Obtuse triangle || Some important theorem and their proOF example|| Exterior angle Theorem proOF

A triangle whose one angle is more than 90^(@) is called a scalene triangle (b) a right triangle an acute triangle (d) an obtuse triangle

RD SHARMA-TRIANGLES-All Questions
  1. Take three collinear point A ,\ B and C\ on a page of your note ...

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  2. Distinguish between a triangle and its triangle region.

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  3. In fig.9, D is a point on side B C of a \ A B Cdot\ \ A D is joined. N...

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  4. In fig. 10, A , B , C and D are four points, and no three points ar...

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  5. What is the difference between a triangle and triangular region?

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  6. Explain the following terms: Triangle                       (ii) pa...

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  7. In fig. 11, the length (in cm) of each side has been indicated alon...

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  8. In fig. 12, there are five triangles. The measures of some of their...

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  9. Fill in the blanks with correct word/symbol to make it a true statemen...

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  10. In each of the following, state if the statement is true (T) or false ...

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  11. Total number of parts of a triangle is 3      (b) 6       (c) 9

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  12. A perpendicular drawn from a vertex to the opposite side of a triangle...

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  13. A triangle may not have an altitude    (b) can have at most 3 alti...

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  14. Line segments joining the vertices to the mid-points of the opposite ...

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  15. A triangle whose on two sides are equal is called an acute triangle  ...

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  16. A triangle whose two sides are equal is known as acute triangle      ...

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  17. A triangle whose all sides are equal is called an equilateral triangl...

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  18. The sum of the lengths of sides of a triangle is known as its area   ...

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  19. A triangle having all sides of different length is known as scalene t...

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  20. A triangle whose one angle is more than 90^0 is called a scalene tria...

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