# Rhombus Action + Sequel = GoGeometry Action 7!

Creation of this applet was inspired by a tweet from Antonio Gutierrez.
The quadrilateral shown below is a rhombus.
Lots of properties of a rhombus are shown at first.

**What is the measure of the pink angle?****How can you formally prove the phenomena displayed at the end?**## Quick (Silent) Demo

## New Resources

## Discover Resources

## Discover Topics

Download our apps here: