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In fig. 12, there are five triangles....

In fig. 12, there are five triangles. The measures of some of their angles have been indicated. Sates for each triangle whether it is acute, right or obtuse.

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RD SHARMA ENGLISH-PROPERTIES OF TRIANGLES-All Questions
  1. Explain the following terms: (i) Triangle                       (ii)...

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

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

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  4. Fill in the blanks with the correct word/symbol to make it a true st...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  19. Two angles of a triangle are of measures 105^0\ a n d\ 30^0dot find...

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  20. One of the angles of a triangle is 130^0, and the other two angles ...

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