△PQR, ∠P = 60, ∠Q = 50 and Which side of the triangle is the longest?
  • a)
    PQ
  • b)
    QR
  • c)
    PR
  • d)
    None of these
Correct answer is option 'A'. Can you explain this answer?
Related Test: Test:Triangles- 1

Class 9 Question

Prateek Kushwaha
Sep 22, 2020
Because angle a is longer .than other two angle.
property.....
the opposite side of a longer angle is larger.

P+q+r=180 p=60 q=50 r=x
60+50+x=180
110+x=180
x=180-110
x=70
so, angle 'r' is the longest side.
r = 70.ANS

G M Rao
Sep 17, 2019
Yes, this answer can be explained easily with fact that angles opposite to larger side is larger.
But first we need to find all the three sides
Now,
ang.p + ang.q + ang.r = 180 { Angle sum property }

60 + 50 + angle r = 180
110 +angle r =180
angle r = 180 _ 110
angle r = 70
Now we conclude that angle r is largest angle therefore side opposite to this angle will be the longest.
Side opposite to angle r is PQ therefore PQ is the longest side of /\PQR

This discussion on PQR,∠P = 60,∠Q = 50and Which side of the triangle is the longest?a)PQb)QRc)PRd)None of theseCorrect answer is option 'A'. Can you explain this answer? is done on EduRev Study Group by Class 9 Students. The Questions and Answers of PQR,∠P = 60,∠Q = 50and Which side of the triangle is the longest?a)PQb)QRc)PRd)None of theseCorrect answer is option 'A'. Can you explain this answer? are solved by group of students and teacher of Class 9, which is also the largest student community of Class 9. If the answer is not available please wait for a while and a community member will probably answer this soon. You can study other questions, MCQs, videos and tests for Class 9 on EduRev and even discuss your questions like PQR,∠P = 60,∠Q = 50and Which side of the triangle is the longest?a)PQb)QRc)PRd)None of theseCorrect answer is option 'A'. Can you explain this answer? over here on EduRev! Apart from being the largest Class 9 community, EduRev has the largest solved Question bank for Class 9.

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This discussion on PQR,∠P = 60,∠Q = 50and Which side of the triangle is the longest?a)PQb)QRc)PRd)None of theseCorrect answer is option 'A'. Can you explain this answer? is done on EduRev Study Group by Class 9 Students. The Questions and Answers of PQR,∠P = 60,∠Q = 50and Which side of the triangle is the longest?a)PQb)QRc)PRd)None of theseCorrect answer is option 'A'. Can you explain this answer? are solved by group of students and teacher of Class 9, which is also the largest student community of Class 9. If the answer is not available please wait for a while and a community member will probably answer this soon. You can study other questions, MCQs, videos and tests for Class 9 on EduRev and even discuss your questions like PQR,∠P = 60,∠Q = 50and Which side of the triangle is the longest?a)PQb)QRc)PRd)None of theseCorrect answer is option 'A'. Can you explain this answer? over here on EduRev! Apart from being the largest Class 9 community, EduRev has the largest solved Question bank for Class 9.