Describe in brief with neat sketch: i) Base line ii) Check line

Describe in brief with neat sketch: i) Base line ii) Check line
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Answer :

i) Base line: 

Base line is generally the longest line running roughly through the middle of the area. It is laid on a level ground as far as possible. The whole frame work is built upon this line. 

ii) Check line 

It is a line joining apex of triangle to some fixed point on the opposite side or a line joining some fixed point on any two sides of the triangle. 

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