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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Given below is the triangle and length of line segments. Identify in the given figure, ray PM is the bisector of ∠QPR.

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प्रश्न

Given below is the triangle and length of line segments. Identify in the given figure, ray PM is the bisector of ∠QPR.

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उत्तर

In ΔPQR,

`"PR"/"PQ" = 10/9`    ...(1)

`"RM"/"QM" = 4/3.6 = (4xx10)/(3.6xx10)=40/36=10/9`   ...(2)

From Equation (1) & (2)

∴ `"PR"/"PQ" = "RM"/"QM"`

By converse of angle bisector theorem, ray PM is the bisector of ∠QPR.

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पाठ 1: Similarity - Practice Set 1.2 [पृष्ठ १३]

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बालभारती Geometry Mathematics 2 [English] Standard 10 Maharashtra State Board
पाठ 1 Similarity
Practice Set 1.2 | Q 1.3 | पृष्ठ १३

संबंधित प्रश्‍न

Given below is the triangle and length of line segments. Identify in the given figure, ray PM is the bisector of ∠QPR.


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Complete the proof by filling in the boxes.

In △PMQ, ray MX is bisector of ∠PMQ.

∴ `square/square = square/square` .......... (I) theorem of angle bisector.

In △PMR, ray MY is bisector of ∠PMQ.

∴ `square/square = square/square` .......... (II) theorem of angle bisector.

But `(MP)/(MQ) = (MP)/(MR)` .......... M is the midpoint QR, hence MQ = MR.

∴ `(PX)/(XQ) = (PY)/(YR)`

∴ XY || QR .......... converse of basic proportionality theorem.


In the given fig, bisectors of ∠B and ∠C of ∆ABC intersect each other in point X. Line AX intersects side BC in point Y. AB = 5, AC = 4, BC = 6 then find `"AX"/"XY"`.


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Prove that : Δ ABC ∼ Δ PQR


Seg NQ is the bisector of ∠ N
of Δ MNP. If MN= 5, PN =7,
MQ = 2.5 then find QP.


From the top of a light house, an abserver looking at a boat makes an angle of depression of 600. If the height of the lighthouse is 90 m then find how far is the boat from the lighthouse. (3 = 1.73)


In ΔABC, ray BD bisects ∠ABC.

If A – D – C, A – E – B and seg ED || side BC, then prove that:

`("AB")/("BC") = ("AE")/("EB")`

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∴ `("AB")/square = square/("EB")`   [from (i) and (ii)]


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∴ `("AB")/square = square/("EB")`   ...[from (I) and (II)]


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