This regular dodecahedron is a geometric shape with perfect symmetry.

This solid is called a regular icosahedron, and it is made up of 20 equilateral triangles.

This is the second time he's been late. Well, they say what happens twice will happen three times.

World War II lasted from 1939 to 1945.

The intermezzo in his piano concert was wonderful.

Kanade loves to play the piano.

My duty is to make this project successful.

I thought his behavior was strange.

That woman is my mother.

Naohiro is my best friend.