* This app is intended for use on the iPad mainly. It may be difficult to see the screen in iPhone. Please be forewarned.
"AQUA" is a math teaching materials touching the screen to learn intuitively.
It allows you to move graphs and solids freely by simple numerical input or button operation.
Then you can proceed while checking the image hard to understand mathematics.
This app can learn "Tangent to A Circle". It is easier for you to use "AQUA menu app".