can anyone help with writting some code that draws an arc on a canvas size 400 by 400 pixels with its centre at 200, 220 and a radius of 100 pixels. The extent of the arc should be from 0 to PI/2.

 

I already tried it but want to see what other people will come up with

I'm trying to draw an equilateral triangle on a canvas of 400 by 400 pixels with the horizontal base twice the length of its height. I also want to draw a circle around the triangle where the triangle base forms the circle's diameter and the circle touches all the points of the triangle. I drew the triangle but can't seam to get everything else right. Can anyone help me?