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Copy of Triangular Numbers
Author:
Edmond So
,
Gareth Daniels
Use the input box to choose a value for
n
.
GeoGebra
Try to work out a formula to find the number of red circles in the
n
th pattern.
GeoGebra
New Resources
Icosahedron1
Dissections by Guillermo Bautista
Icosahedron
alg2_05_05_04_applet_exp_fxn_flvs
Exploring the Area of a Triangle
Discover Resources
Start, copy a triangle
Chords Equidistant from the Center
Dilation Grid 2
Ex 9:03
Arc_Length_and_Curvature_Normal_Plane
Discover Topics
Cuboid
Parallelogram
Pyramid
Addition
Cosine