हिंदी

In Triangle Abc, ∠A = 30°, ∠B = 40° and ∠C = 110° in Triangle Pqr, ∠P = 30°, ∠Q = 40° and ∠R = 110° a Student Says that Triangle Abc ≅ Triangle Pqr by Aaa Congruence Criterion. is He Justified? Why Or Why Not? - Mathematics

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प्रश्न

In ΔABC, ∠A = 30°, ∠B = 40° and ∠C = 110°

In ΔPQR, ∠P = 30°, ∠Q = 40° and ∠R = 110°

A student says that ΔABC ≅ ΔPQR by AAA congruence criterion. Is he justified? Why or why not?

उत्तर

No. This property represents that these triangles have their respective angles of equal measure. However, this gives no information about their sides. The sides of these triangles have a ratio somewhat different than 1:1. Therefore, AAA property does not prove the two triangles congruent.

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Criteria for Congruence of Triangles
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Congruence of Triangles - Exercise 7.2 [पृष्ठ १५०]

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एनसीईआरटी Mathematics [English] Class 7
अध्याय 7 Congruence of Triangles
Exercise 7.2 | Q 4 | पृष्ठ १५०
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