The Sum of the Angles of a Triangle

Author:: Jesse Parete

Topic:: Angles, Geometry, Triangles

Use the two sliders to move copies of the two angles B and C next to to angle A to fill the semi-circle marking the 180 degree straight angle atop the triangle.

New Resources

Creating Parametric Equations
Regular Polygons
The Teacher's (and Student's) Toolbox
Isosceles Trapezium (Trapezoid)
Right Trapezium (Trapezoid)

Discover Resources

Υπολογισμός μορίων
hexa tessellation
polygon inside circle
GM3-03-P2-ET1 Sign of x- and y-Coordinates in Each Quadrant
Point / Midpoint / Segment Definition

Discover Topics

Logarithmic Functions
Piecewise Functions
Curve Sketching
Probability
Step Functions