Euclid's Fifth

Euclid's Fifth Postulate

Adjust the sliders to change the size of alternate angles n and m. Can you find the relationship between n and m to decide which side of XY the lines AB and CD cross?

New Resources

函數的單調性
အခြေခံ data အခေါ်အဝေါ်များ
Average Value of a Function
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
apec

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Wave Equation on a Line
chapter test
Triangle Construction
Regular Nonagon Simplicity (GoGeometry Action 175!)
RPPK - tuhost vazby

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Mathematics
Natural Numbers
Rhombus
Statistical Characteristics
Isosceles Triangles