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10.13 Angles in a Triangle
Author:
Daniel Ethier
Drag points B and C to change the triangle.
GeoGebra
Which angles always remain congruent? Why? What is the sum of angles DAC, CAB, and BAE? Why?
New Resources
Addition of Vectors
Poorly Drawn Parallelograms 3
Thin Slice: Arc Length & Sector Area
Tutorial: Create lists of numbers and objects
Icosahedron1
Discover Resources
چند ضلعیهای منتظم محاطی یک دایره
Figure 9.6 Labour Supply
Suoran yhtälö
sin and cos graph
Construction 4: Bisect an Angle
Discover Topics
Definite Integral
Rhombus
Step Functions
Hyperbola
Rectangle