おうぎ形の利用 Calculate the area of the black region.

おうぎ形の利用 Calculate the area of the black region
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okyota —

 
Resource Type
Activity
Tags
angle  area  arithmetic  black  calculate  circle  class  congruence  constructions  equilateral-triangle  geometry math of plane-figures practice pythagoras region right-triangle rotation sector square symmetry the triangles おうぎ形の利用 Show More…
Target Group (Age)
3 – 19+
Language
Japanese / 日本語‎
 
 
 
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