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    I have to construct the triangle "J" only using protractor, ruler, compass and pencil. But I can't seem to find a way to figure out the angles. Please help.

    Last edited by schunck; January 11th, 2017 at 08:17.

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    #2
    Quote Originally Posted by schunck View Post
    I have to construct the triangle "J" only using protractor, ruler, compass and pencil. But I can't seem to find a way to figure out the angles. Please help.
    Hi schunck, and welcome to MHB!

    Just to get you started, the two tangents from a point to a circle have the same length. So the line $AB$ is 13cm long, and a circle of radius 4cm touches it at a distance 6cm from $A$. Can you take it from there? (You don't need to know the angles.)

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    Of course. Thx

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