The thirteenth day of the month is my birthday.

The 24-cell is one of the convex regular polytopes in four dimensions.

He found a regular dodecahedron-shaped spicy cod roe.

He made a model of a regular icosahedron.

Telescopium is one of the constellations in the southern sky.

He was holding a small bamboo basket in his hand, collecting vegetables.

I work in the sales department.

He is observing stars using his new telescope.

I recommend getting vaccinated against hepatitis A.

It was confirmed that he was infected with hepatitis B.