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If A B C is an isosceles triangle such t...

If `A B C` is an isosceles triangle such that `A B=A C` and `A D` is an altitude from `A` on `B C` . Prove that (i) `/_B=/_C` (ii) `A D` bisects `B C` (iii) `A D` bisects `/_A`

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To solve the problem step by step, we will prove the three statements regarding the isosceles triangle \( ABC \) with \( AB = AC \) and the altitude \( AD \) from \( A \) to \( BC \). ### Step 1: Draw the Triangle Draw triangle \( ABC \) with \( AB = AC \). Mark point \( D \) on line \( BC \) such that \( AD \) is perpendicular to \( BC \). ### Step 2: Identify the Right Angles Since \( AD \) is an altitude, we have: \[ ...
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RD SHARMA ENGLISH-CONGRUENT TRIANGLE -All Questions
  1. P is a point equidistant from two lines l and m intersecting at a poin...

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  2. If two parallel lines are intersected by a transversal, prove that ...

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  3. If A B C is an isosceles triangle such that A B=A C and A D is an alti...

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  4. If PS is the bisector of /Q P R and P T|Q R . Show that /T P S=1/2(/Q...

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  5. Of all the line segments that can be drawn to a given line, from a ...

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  6. A triangle A B C is right angled at A. AL is drawn perpendicular to B...

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  7. The sum of any two sides of a triangle is greater than the third sid...

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  8. In Figure AB||DC , if x=(4y)/3 and y=(3z)/8, find /B C D ,/A B C and /...

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  9. A B is a line segment and line l is its perpendicular bisector. If ...

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  10. A B C is a triangle in which /A=72^0 , the internal bisectors of angle...

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  11. AB is a line-segment. P and Q are points on opposite sides of AB suc...

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  12. If one angle of a triangle is equal to the sum of the other two, sh...

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  13. Suppose line segments A B and C D intersect at O in such a way that A ...

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  14. Two angles of a triangle are equal and the third angle is greater th...

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  15. If D is the mid-point of the hypotenuse A C of a right triangle A B C ...

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  16. In triangle A B C ,/B=45^0,/C=55^0 and bisector of /A meets B C at ...

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  17. A B is a line segment, A X and B Y are two equal line segments drawn o...

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  18. In Figure, if AB||DE ,/B A C=35^0 and /C D E=53^0 , find /D C E.

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  19. l and m are two parallel lines intersected by another pair of parall...

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  20. (Exterior Angle Theorem): If a side of a triangle is produced, the e...

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