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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

A triangle whose all sides are equal is called an equilateral triangle (b) an acute triangle a right triangle (d) an isosceles triangle

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

The median of a triangle divides it into two congruent triangle (b) isosceles triangles right triangles (d) triangles of equal areas

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

Define each of the following: (a) A scalene triangle (b) An obtuse triangle

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-PROPERTIES OF TRIANGLES-All Questions
  1. In fig. 10, A , B , C and D are four points, and no three points ar...

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

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

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

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

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  6. Fill in the blanks with the correct word/symbol to make it a true s...

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

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  8. Two angles of a triangle are of measures 75^0\ a n d\ 35^0 find the...

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  9. One of the angles of a triangle has measure 80^0 and the other two ...

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  10. Of the three angles of a triangle, one is twice the smallest and an...

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  11. Each of the two equal angles of a triangle is twice the third angle...

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  12. If the angles of a triangle are in the ratio 2:\ 3:\ 4, determine t...

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  13. The sum of two angles of a triangle is equal to its third angle. De...

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  14. One of the acute angles of a right triangle is 58^0 , find the othe...

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  15. In fig. 14 , A B C is right-angled at C ,\ a n d\ C D|A Bdot also /A=...

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  16. In fig. 15 , D , E are points on sides AB, AC of A B C such that ...

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  17. The fig.16 has been obtained by using two triangles. Find /A+/B+/C+...

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  18. Fig.17 is made up of two triangles. find /D A B+/A B C+/B C D+/C D...

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  19. In five cornered fig. 18,A D , A C are joined. Find /E A B+/B A C+/B C...

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  20. The sides A B and A C of A B C are product to P and Q\ respectively....

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