Triangle Properties
Sum of Angles in a Triangle
Sum of Angles in a Triangle
Use the applet below to explore the sum of angles in a triangle.
Use the applet below to explore the sum of angles in a triangle.
Exterior Angle of a Triangle
Exterior Angle of a Triangle
Use the applet below to explore the property of exterior angle of a triangle.
Use the applet below to explore the property of exterior angle of a triangle.