MCQ
બિંદુ $A (1, 1), B (-2, 7) $ અને $C (3, -3) $ ...... છે.
- ✓સમરેખ
- Bકાટકોણ
- Cસમબાજુ
- Dસમદ્રિબાજુ
$BC\,\, = \,\,\sqrt {{{( - 2 - 3)}^2}\, + \,\,{{(7 + 3)}^2}} \, = \,\,\,\sqrt {25\,\, + \,\,\,100} \,\,\, = \,\,\,5\,\,\sqrt 5 $
$CA\,\, = \,\,\sqrt {{{(3 - 1)}^2}\,\, + \,\,{{( - 3 - 1)}^2}} \,\, = \,\,\,\sqrt {4\,\, + \,\,\,16} \,\,\, = \,\,\,2\,\,\sqrt 5 $
સ્પષ્ટ છે કે $ BC\,\, = \,\,AB\,\, + \,\,AC\,$
આથી $\,\,A\,\,,\,\,B\,\,,\,\,C\,$ સમરેખ છે
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