He finally passed the exam, proving that the third time's a charm.

Please calculate the area of this right triangle.

This ring is made of alexandrite.

I am a member of the Third International.

Hydrocyanic acid is a very dangerous chemical.

As soon as he arrived, he said 'I just got here.'

He drew an equilateral triangle shape.

In this chemical reaction, cyclohexane is the main product.

Her misandry makes her relationship with men difficult.

He damaged his peroneus tertius muscle due to a foot injury.