Q. 63.5( 2 Votes )

Draw a triangle o

Answer :

We have to construct a triangle with A = 32.5° ,


B = 37.5°


And, we know in a triangle, the sum of all angles is 180° .


Hence, the C = 180 – 32.5 – 37.5


C = 110 degrees.


The circumradius = 3 cm.


Let’s say a = 3 cm, this is side BC.


1) First draw a line CD. At C and with a protractor make an angle of 110° , as shown,



2) With C as the centre and a radius of 3 cm cut the line CE. This point will be B.



3) At B, and with a protractor, make an angle of 75° with BC, as shown below:



Now, bisect the CBR to get CBN = 37/5°


4) The other angles can be measured with the help of the protactor.



This will be the required triangle.


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