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start, create a 135 degree angle
Author:
3082071
GeoGebra
New Resources
探究由平行線和截線所成的角
Poorly Drawn Parallelograms 3
Droste effect
Poorly Drawn Parallelograms
alg2_05_05_01_applet_exp_2_flvs
Discover Resources
Nader
paraboleando
圓周角
Optional Trapezoid
locus and conics (4)
Discover Topics
Surface
Interest Calculation
Equilateral Triangles
Integers
Coordinates