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In Fig.9, if ray O C stands on line A B ...

In Fig.9, if ray `O C` stands on line `A B` such that `/_A O C=/_C O B ,` then show that `/_A O C=90^0dot`

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In Fig.92, A O B is a straight line such that /_A O C=(3x+10)^0,\ /_C O D=50^0 and /_B O D=(x-8)^0dot The value of x is (a) 32 (b) 36 (c) 42 (d) 52

In a triangle A B C ,/_A B C=/_A C B and the bisectors of /_A B C and /_A C B intersect at O such that /_B O C=120^0dot Show that /_A=/_B=/_C=60^0

In a triangle A B C ,\ /_A B C=\ /_A C B and the bisectors of /_A B C\ a n d\ /_A C B intersect at O such that /_B O C=120^0dot Show that /_A=/_B=/_C=60^0 .

If A ,\ B ,\ C are three points on a circle with centre O such that /_A O B=90^0 and /_B O C=120^0, then /_A B C= (a) 60^0 (b) 75^0 (c) 90^0 (d) 135^0

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In a triangle A B C , N is a point on A C such that B N_|_A C . If B N^2=A N N C , prove that /_B=90o .

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RD SHARMA ENGLISH-LINES AND ANGLES-All Questions
  1. In Fig. 7, O A\ a n d\ O B are opposite rays: (i) If x=75 find the v...

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  2. In Fig. 8,\ /A O C\ a n d\ /B O C form a linear pair. Determine the va...

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  3. In Fig.9, if ray O C stands on line A B such that /A O C=/C O B , then...

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  4. In Fig.10, lines l1\ a n d\ l2 interest at O , forming angles as shown...

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  5. In Fig. 11, determine the value of ydot

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  6. In Fig. 12, two straight lines P Q\ a n d\ R S\ intersect each othe...

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  7. Write down each pair of adjacent angles shown in Fig. 13.

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  8. In Fig.14, name all the pairs of adjacent angles.

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  9. In Fig. 15, write down: (i) each linear pair (ii) each pair of vert...

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  10. Are the angles 1 and 2 given in Fig. 16 adjacent angles?

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  11. Find the complement of each of the following angles: (i) 35^0 ...

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  12. Find the complement of each of the following angles: (i) 45^0 ...

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  13. Find the supplement of each of the following angles: (i) 70^0 (...

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  14. Find the supplement of each of the following angles: (i) 135^0 ...

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  15. Identify the complementary and supplementary pairs of angles from th...

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  16. Identify the complementary and supplementary pairs of angles from th...

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  17. Can two angles be supplementary, if both of them be

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  18. Name the four pairs of supplementary angles shown in Fig.17.

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  19. In Fig.18 A , B , C are collinear point and /D B A=\ /E B Adot (i) ...

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  20. If two supplementary angles have equal measure, what is the measure...

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