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In Delta ABC , internal angle bisector o...

In `Delta ABC `, internal angle bisector of `angle A` meets side BC in D. `DE bot AD ` meets AC in E and AB in F. Then

A

AE is H.M. of and c

B

`AD = (2bc)/(b + c) cos. A/2`

C

`EF = (4bc)/(b+c) sin . A/2`

D

`Delta AEF ` is isosceles

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A, B, C, D
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AAKASH SERIES-PROPERTIES OF TRIANGLES-LECTURE SHEET EXERCISE - III (Straight Objective Type Question)
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  2. In a triangle ABC, D and E are the mid-points of BC, CA respectively. ...

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  3. If the bisector of the angle lfloor C of a triangle ABC cuts AB in D ...

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  4. Let ABC be an isosceles triangle with base BC. If 'r' is the radius o...

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  5. If a right angled Delta ABC of maximum area is inscribed within a cir...

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  6. P is a point inside a Delta ABC of area K (K gt 0). The lengths of pe...

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  7. If the bisector angle A of the triangle ABC makes an angle theta with ...

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  8. Internal bisector of an angle angle A of triangle ABC meets side BC a...

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  9. In Delta ABC , internal angle bisector of angle A meets side BC in D. ...

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  10. Match the following

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  11. Match the following

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  12. Consider a triangle ABC, where x, y, z are the length of perpendicular...

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  13. Consider a triangle ABC, where x, y, z are the length of perpendicular...

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  14. Consider a triangle ABC, where x, y, z are the length of perpendicular...

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  15. The sides of a Delta^("le") ABC " are " a = 4, b = 5, c = 6 The leng...

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  16. The sides of a Delta^("le") ABC " are " a = 4, b = 5, c = 6 The leng...

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  17. The sides of a Delta^("le") ABC " are " a = 4, b = 5, c = 6 The leng...

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  18. The sides of a Delta ^("le') ABC be 8, 7, 6 and smallest angle is C t...

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  19. The sides of a Delta ^("le') ABC be 8, 7, 6 and smallest angle is C t...

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  20. The sides of a Delta ^("le') ABC be 8, 7, 6 and smallest angle is C t...

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