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If a quadrilateral ABCD, the bisector of...

If a quadrilateral ABCD, the bisector of `angleC angleD` intersect at O.
Prove that `angleCOD=(1)/(2)(angleA+angleB)`

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NCERT TELUGU-QUADRILATERALS-EXERCISE
  1. In the adjacent figure ABCD is a parallelogram ABEF is a rectangle sho...

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  2. Show that the diagonals of a rhombus divide it into four congruent tri...

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  3. If a quadrilateral ABCD, the bisector of angleC angleD intersect at O....

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  4. The opposite angles of a parallelogram are (3x-2)^@ and (x+48)^@. Find...

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  5. Find the measure of all the angles of a parallelogram, if one angle is...

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  6. In the adjacent figure ABCD is a parallelogram and E is the midpoint o...

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  7. In the adjacent figure a parallelogram and P, Q are the midpoints of s...

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  8. ABC is an isosceles triangle in which AB = AC. AD bisects exterior ang...

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  9. ABC is an isosceles triangle in which AB = AC. AD bisects exterior ang...

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  10. ABCD is a parallelogram and AP and CQ are perpendicular from vertices ...

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  11. ABCD is a parallelogram AP and CQ are perpendiculars drawn from vertic...

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  12. In Delta^s ABC and DEF, DE and AB || DE, BC=EF and BC || EF. Vertices ...

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  13. In Delta^s ABC and DEF, DE and AB || DE, BC=EF and BC || EF. Vertices ...

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  14. In Delta^s ABC and DEF, DE and AB || DE, BC=EF and BC || EF. Vertices ...

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  15. In Delta^s ABC and DEF, DE and AB || DE, BC=EF and BC || EF. Vertices ...

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  16. ABCD is a parallelogram. AC and BD are the diagonals intersect at O. P...

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  17. ABCD is a square. E, F, G and H are the mid points of AB, BC, CD and D...

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  18. Draw a triangle ABC and mark the midpoints E and F of two sides of tri...

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  19. ABC is a triangle . D is a point of AB such that AD=(1)/(4)AB and E is...

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  20. ABCD is quadrilateral E, F, G and H are the midpoints of AB, BC, CD an...

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