Question

answer fast plz
in the following figure abc is a triangle and PQ//BC, show that angle A +angle b+ angle c=180°​

Answer 1

Refer attachment for your answer...

Answer 2

Answer:

let angle PAB=1

angle QAC=2

PAB+QAC+BAC=180° (l.p.).......1

angle PAB=angle ABC (adjacent angle).........2

angle QAC=angle ACB ". ". .......3

from eq. 1,2,3

ABC+BCA+ACB=180°

hence proved

Step-by-step explanation:

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