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In an isosceles triangle, if the vertex ...

In an isosceles triangle, if the vertex angle is equal to the sum of the base angles, then the measure vertex angles of the triangles is

A

`100^@`

B

`110^@`

C

`120^@`

D

`130^@`

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MODERN PUBLICATION-TRIANGLES-EXERCISE
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  7. In an isosceles triangle, if the vertex angle is equal to the sum of t...

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  8. Which of the following is not true

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  9. In triangleABC, AB=AC and angleA=100^@, find angleB and angleC.

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  10. In trianglePQR what is the value of x

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  11. O is any point in the interior of triangleABC such that OB=OC and AB=A...

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  12. In triangleABC,angleB=35^@,angleC=65^@ and the bisector of angleBAC me...

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  13. ABC is an isosceles triangle with AB = AC and AD is one of its altitud...

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  15. CDE is an equilateral triangle formed on a side CD of a square ABCD(se...

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  16. D is any point on side AC of triangleABC with AB=AC show that CD>BD.

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  17. Bisectors of angles B and C of an isoscels triangles ABC with AB=AC in...

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  18. ABC is a right angled with AB=AC. Bisector of angleA meets BC at D. pr...

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  19. O is a point in the interior of a square ABCD such that OAB is an equi...

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