Draw a line AB of 5cm in length and then draw a line perpendicular to AB through A and B respectively.Are these lines parellel? Justify. 

Asked by Rahul | 8th Nov, 2014, 12:16: AM

Expert Answer:

D r a w space a space l i n e space A B space o f space 5 space c m space i n space l e n g t h.  N o w space d r a w space t w o space l i n e s space B C space a n d space A D space p e r p e n d i c u l a r space t o space A B space t h r o u g h space B space a n d space A space r e s p e c t i v e l y.  N o w space w e space n e e d space t o space p r o v e space t h a t space B C space a n d space A D space a r e space p a r a l l e l.
 
A D space a n d space B C space a r e space t w o space l i n e s space a n d space A B space i s space t h e space t r a n s v e r s a l. H e r e space t h e space c o r r e s p o n d i n g space a n g l e s space angle D A B space equals space angle C B X T h e r e f o r e comma space t h e space l i n e s space A D space a n d space B C space a r e space p a r a l l e l space l i n e s

Answered by Vimala Ramamurthy | 8th Nov, 2014, 02:49: PM

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