Angle sum of a quadrilateral

Author:mathstobie, amylava

Students move the points around to investigate the angle sum of a quadrilateral. There is also an option to show whether the quadrilateral is convex or concave.

New Resources

Building Triangles with Set Areas
Pathway to Proof: Triangle Angles
bewijs stelling van Pythagoras
Area of a Circle Illustrated
Building Parallelograms with Set Areas

Discover Resources

Theorem 7.8
CY LIMITS - EXAMPLES'in kopyası
Circle Flower
Problem 7_8
Point of concurrency in an arbitrary triangle

Discover Topics

Exponent
Pie Chart or Circle Chart
Conic Sections
Frequency Distribution
Natural Numbers