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Maharashtra State BoardSSC (English Medium) 9th Standard

In a rhombus PQRS if PQ = 7.5 cm then find QR. If ∠QPS = 75° then find the measure of ∠PQR and ∠SRQ.

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Question

In a rhombus PQRS if PQ = 7.5 cm then find QR. If ∠QPS = 75° then find the measure of ∠PQR and ∠SRQ.

Sum
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Solution

PQ = 7.5 cm       ...[Given]

`square`PQRS is a rhombus.       ...[Given]

∴ QR = PQ       ...[Sides of a rhombus are congruent]

∴ QR = 7.5 cm

∠QPS = 75°        ...[Given]

∠QPS + ∠PQR = 180°      ...[Adjacent angles of a rhombus are supplementary]

∴ 75° + ∠PQR = 180°

∴ ∠PQR = 180° – 75°

∴ ∠PQR = 105°

∠SRQ = ∠QPS      ...[Opposite angles of a rhombus]

∴ ∠SRQ = 75°

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Chapter 5: Quadrilaterals - Practice Set 5.3 [Page 69]

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Balbharati Mathematics 2 [English] Standard 9 Maharashtra State Board
Chapter 5 Quadrilaterals
Practice Set 5.3 | Q 2 | Page 69

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