Math Blog Post- The Triangle Inequality Theorem

The Triangle Inequality Theorem goes as follows:

“The sum of any two side lengths of a triangle is greater than third side length.”

This means that A and B must be greater than C. If it isn’t greater, then the triangle’s sides don’t match.

For example: A is equal to 4, B is equal to 3, and C is equal to 7.

This WOULD NOT be a complete triangle because 4+3=7. 

Let’s try another one: A is equal to 34, B is equal to 21, and C is equal to 50.

This WOULD be a complete triangle because 34+21=55, and 55 is more than 50.

Got it? Good!



Two Triangle Theorms- Math Blog Post

Today I will be explaining two geometry theroems- the Isosceles Triangle Theorm and the Equiangular Triangle Theorm.

Isosceles Triangle Theorm– This theorm states, “If two sides of a triangle are congruent, then the angles opposite it are congruent.” This theorm can be used the prove congruence in isosceles triangles.

Equiangular Triangle Theorm– This theorm says, “If a triangle is equilaterial, then it’s also equiangular.” It can be used for algebra problems within geometry.