दी गई आकृति में यदि PO || RS, तो x का मान है -

12-5-2025 IMG-1346 Shiwangani Gupta -3

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Rajasthan 3rd Grade Level 1 Official Paper (Held On: 25 Feb, 2023 Shift 1)
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  1. 42
  2. 74
  3. 106
  4. 126

Answer (Detailed Solution Below)

Option 1 : 42
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दिया गया है:

PQ || RS (PQ, RS के समानांतर है)

∠1 = (3x - 20)°

∠2 = (2x - 10)°

प्रयुक्त अवधारणा:

जब दो समांतर रेखाओं को एक तिर्यक रेखा प्रतिच्छेद करती है, तो क्रमागत अंतः कोण संपूरक होते हैं। इसका अर्थ है कि क्रमागत अंतः कोणों के मापों का योग 180° होता है।

दी गई आकृति में, (3x - 20)° और (2x - 10)° वाले कोण क्रमागत अंतः कोण हैं।

गणना:

क्रमागत अंतः कोणों की अवधारणा के अनुसार:

(3x - 20)° + (2x - 10)° = 180°

समान पदों को मिलाएँ:

3x + 2x - 20 - 10 = 180

5x - 30 = 180

5x = 180 + 30

5x = 210

x = 210 / 5

x = 42

इसलिए, x का मान 42 है।

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