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In DeltaABC, bisectors of angleB and ang...

In `DeltaABC`, bisectors of `angleB and angleC` interesct each other at point O. Prove that `angleBOC=90^(@)+(1)/(2)angleA i.e., angle1 =90^(@)+(1)/(2)`

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NAVNEET PUBLICATION - MAHARASHTRA BOARD-LINE AND ANGLES-Skill Testing Exercise
  1. Given that angleA and angleB are supplementary angles. If angleA:angle...

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  2. angleA and angleB are complementary angles. If angleA=x+20^(@) and ang...

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  3. Given that angleA and angleB are complementary angles. If angleA=angle...

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  4. Given that angleX and angleY are supplementary angles. If angleX=5 ang...

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  5. angleP and angleQ are supplementary angles. If angleP=angleQ-40^(@), ...

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  6. In the following figure, l II m and t is their transversal. If angleXP...

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  7. In the following l II m and t is their transversal. If angleAXY=65^(@)...

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  8. In the following figure, t is the transversal of l and m. If angleAPQ=...

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  9. Ray AX is the bisector of angleBAC and ray AY is the bisector of angle...

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  10. Ray EX is the bisector of angleDEF and ray EY is the bisector of angle...

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  11. angleX and angleY are supplementary angles. If angleX:angleY=25:11, th...

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  12. If angleA and angleB are supplementary angles. If 4angleA=5angleB, the...

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  13. In DeltaABC,angleA:angleB:angleC=3:4:5. Find the measure of each angle...

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  14. In DeltaABC,angleA=(angleB+angleC)/(3) and angleB:angleC=2:1. Find the...

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  15. Side BC of DeltaABC is extended on both the sides so that exterior ang...

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  16. The side BC of DeltaABC is product to N. bisector of angle meets BC at...

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  17. For the figure given below, prove that / ADC = / A + / B + / C

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  18. In DeltaABC, bisectors of angleB and angleC interesct each other at po...

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  19. For the figure below, prove that / CBE + / ADF = / DAB + / DCB.

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  20. Prove that the sum of the angles of a quadrilateral is 360^(@) .

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