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Mathematics

In the given figure, BP and CQ are two medians of the △ABC. If BC = 12 cm, the length of QP =

  1. 4 cm

  2. 6 cm

  3. 8 cm

  4. 10 cm

In the given figure, BP and CQ are two medians of the △ABC. If BC = 12 cm, the length of QP.R.S. Aggarwal Mathematics Solutions ICSE Class 9.

Mid-point Theorem

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Answer

We know that,

Median drawn from the vertex bisects the opposite side.

In the given figure, BP and CQ are two medians of the △ABC. If BC = 12 cm, the length of QP.R.S. Aggarwal Mathematics Solutions ICSE Class 9.

Since, CQ is the median to AB.

⇒ AQ = BQ

Since, BP is the median to AC

⇒ AP = CP

By mid-point theorem,

The line segment joining the mid points of any two sides of a triangle is parallel to the third side and is equal to half of it.

Since, Q and P are the mid-points of AB and AC respectively.

⇒ QP || BC and QP = 12\dfrac{1}{2} BC

⇒ QP = 12\dfrac{1}{2} × 12

⇒ QP = 6 cm.

Hence, option 2 is the correct option.

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