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In DeltaABC, D, E and F are the midpoint...

In `DeltaABC, D, E and F` are the midpoints of sides AB, BC and CA respectively. Show that `DeltaABC` is divided into four congruent triangles, when the three midpoints are joined to each other. (ΔDEF is called medial triangle)

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VGS PUBLICATION-BRILLIANT-QUADRILATERALS-EXERCISE
  1. ABCD is a parallelogram AP and CQ are perpendiculars drawn from vertic...

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  2. ABCD is a square. E, F, G and H are the mid points of AB, BC, CD and D...

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  3. In DeltaABC, D, E and F are the midpoints of sides AB, BC and CA respe...

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

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  5. In the Fig. AD and BE are medians of DeltaABC and BE"||"DF. Prove that...

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  6. Show that the figure formed by joining the midpoints of sides of a rho...

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  7. Show that the line segments joining the midpoints of the opposite side...

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  8. ABC is a triangle right angled at 'C'. A line through the midpoint M o...

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  9. ABC is a triangle right angled at 'C'. A line through the midpoint M o...

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  10. Sum of the angles in a quadrilateral is ……….

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  11. Fill in the blank:In a quadrilateral one pair of opposite sides are pa...

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  12. square ABCD is a trapezium in which AB////CD ,if angleA = 45^@,then a...

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  13. square ABCD is a parallelogram. If angleD = 80^@ then angle A, angle B...

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  14. The Bisectors of any two interior angles of a rhombus meet at

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  15. Diagonals are equal in a

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  16. Angle between the diagonals of a rhombus is

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  17. Each angle of a rectangle is

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  18. In DeltaABC,BC=8cm and D, E are the midpoints of AB and AC, also AF=1/...

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  19. In DeltaABC , D, E and F are the mid points of the sides, then DeltaDE...

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  20. If the diagonals of a quadrilateral bisect each other then it is a

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