A free program for Android, by Bytes Arithmetic LLC.

Geometry Pad is a geometric shapes calculator app with a simple interface and powerful tools. It’s one of the best and most popular geometry and trigonometry apps. With Geometry Pad, you can create and explore geometric shapes, change their properties and find their areas, perimeter, and volume. Geometry Pad also has a document viewer and an export tool for PDF, SVG, and image files.

The app has several tools built into the application:

You can choose to view the tools as buttons or as icons.

When you click on an object, you can see its properties and its location in the object.

You can see the current value of the object’s property in the top left corner of the screen.