Today we started the class by checking the homework, in which Mrs. Saatkamp remained us what was the theorem 5-12 (inequality of triangles).

Theorem 5-12: The sum of the lenghts of any two sides of atriangle is greter than the lenght of the third side.

Then we went to the computers to work in the geogebra. There we learned two new theorems:

Theorem 5-13 (SAS inequality): If two sides of one triangle are congruent to two sides of another triangle, and the included angle in one triangle is greater than the included angle in the other, then the third side of the first triangle is longer than the third side in the second triangle.

Theorem 5-14 (SSS inequality): If two sides of one triangle are congruent to two sides of another triangle and the third side in one triangle is longer than the third side in the other, then the angle between the pair of congruent sides in the first triangle is greater than the corresponding angle in the second triangle.

Today we don't have homework! But remain on friday we have a quiz, and next week on wednesday I think we have a test...so everybody has to STUDY!!!!

javier (ODPSF)