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In DeltaA B C , D, E and F are respectiv...

In `DeltaA B C` , D, E and F are respectively the mid-points of sides AB, BC and CA. Show that `DeltaA B C` is divided into four congruent triangles by joining D, E and F.

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RD SHARMA ENGLISH-QUADRILATERALS-All Questions
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  2. In Figure, D ,E and F are, respectively the mid-points of sides B C ,C...

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  3. In DeltaA B C , D, E and F are respectively the mid-points of sides...

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  4. l, m and n are three parallel lines intersected by transversals p an...

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  5. A B C D is a square E ,\ F ,\ G\ a n d\ H are points on A B ,\ B C ,\ ...

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  6. A B C D is a rhombus, E A B F is a straight line such that E A=A B=B F...

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  7. A B C D is a parallelogram. A D is a produced to E so that D E=D C and...

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  8. The line segment joining the mid-points of any two sides of a triangle...

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  9. In a quadrilateral ABCD, CO and DO are the bisectors of /C and /D ...

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  10. The angle of a quadrilateral are respectively 100^0,\ 98^0,\ 92^0dot F...

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  11. In a quadrilateral A B C D , the angles A ,\ B ,\ C\ a n d\ D are in t...

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  12. The sides B A and D C of a quadrilateral A B C D are produced as shown...

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  13. In a quadrilateral A B C D ,A O andB O are the bisectors of A/ and /B ...

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  14. In Figure, bisectors of /B and /D of quadrilateral A B C D meet C D an...

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  15. The angle of a quadrilateral are respectively 100^0,\ 98^0,\ 92^0dot F...

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  16. In a quadrilateral A B C D , the angles A ,\ B ,\ C\ a n d\ D are in t...

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  17. In a quadrilateral A B C D ,C O and D O are the bisectors of /C and /D...

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  18. The angles of a quadrilateral are in the ratio 3:5:9: 13. Find all t...

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  19. In a parallelogram A B C D , prove that sum of any two consecutive ang...

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  20. In a parallelogram A B C D ,/D=115^0, determine the measure of /A and ...

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