triantan 用英语:

The sum of all the angles in a triangle equals 180 degrees.

It must be a triangle.

Having sex in triangle means two woman and one man

The teacher drew a triangle on the blackboard.

A triangle has three sides and three angles.

In the Bermuda Triangle there is a parallel universe.

If a triangle has two right angles, it's a square missing one side.

God cannot make a triangle with more than 180 degrees.

Please find the area of the triangle.

The child drew a spherical triangle.

For example, Pepperberg would show Alex an object, such as a green wooden peg or a red paper triangle.

Pythagoras' theorem allows you to calculate the length of the hypotenuse of a right triangle.

Christopher Columbus was once quoted as saying that pirates were too "simple-minded". He created the Bermuda Triangle later that year.