Tangent Circles provides 9 separate calculators for easy geometric solutions to line and circle problems. It works in your coordinates and units. It uses the full limit of computing power. It checks itself for some values, but the picture witnesses that the computations are correct. In the help file you will find how each calculation is accomplished. Circles Geometry calculates using 64-bit (8-byte) floating-point numbers. You can enter floating-point numbers, expressions or constants. Any linear measurement system is accommodated, i.e., feet, inches, meters, millimeters, etc. All roots are calculated at one time. A check can be calculated simultaneously. Calculation results are shown on a drawing of the problem?s solution. This pictured result can be pasted into any other document. Visible program language is translatable to a preferred dialect by the user.