Internal angle sum of triangles

Author:mrsK

- Drag the vertices A, B, C to create different types of triangles. - Use the sliders to create copies of the same triangle and prove that the internal angles always add up to 180 degrees.

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Curve C1 through 7 points and their tangents.
bewijs stelling van Pythagoras
x and f(x)
Rule of Sarrus
Solve System Starter: Elimination

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Perpendicular bisector of chord in circle
Activity 3 Create your own Dilation
Task 3
H2M L15 Q5

Discover Topics

Linear Programming or Linear Optimization
Rational Numbers
Congruence
Secant Line or Secant
Isosceles Triangles