圓的切線

圓的切線方程​

Open Ended

試計算，圓 $$x^2+y^2-2x-4y-8=0$$  的圓心

Draw

試畫出過點(3,5)的切線圓 $$x^2+y^2-2x-4y-8=0$$  

圓的切線​方程

Some text here about the topic of discussion

Some text here about the topic of discussion

Open Ended

試計算，圓 $$x^2+y^2-4x+6y+11=0$$  的圓心和半徑

Draw

試畫出平行於L的圓的切線