Q. 234.7( 7 Votes )

Draw a triangle A

Answer :

To construct a right-angled triangle such that its sides are 3/4 times of the corresponding sides of the given triangle:

(a). Draw a line BC = 7 cm as base.


(b). Taking BC as base draw 60° angle as CBA = 60°, where AB = 6 cm.


(c). Connect A to C as hypotenuse.


Now we shall construct another triangle whose sides are 3/4 times the corresponding sides of the triangle.


(d). Set the compass to 1 cm, rest one of the legs of the compass at point B and start making arcs B1 starting from B, B2 from B1, B3 from B2 and B4 from B3, since we have to construct a triangle having side equal to 3/4 times of corresponding sides of the given triangle.


(e). Join B4 to C.


(f). Now, draw a line to BC from B3, parallel to CB4.


(g). Say this point on BC is C’.


(h). Similarly, make an arc from C’ and cut the arc at 60° from its foot, then join CA.


(i). We get BA’ automatically.


And hence, we have the required triangle BA’C’.



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