rewrite this but in grade 10 or 9 level: The Triangle Angle Sum Theorem states that the sum of the interior angles of a triangle equals 180 degrees. This theorem helps prove the Angle-Angle-Side (AAS) congruence criterion by confirming that if two angles and the non-included side of one triangle are congruent to the corresponding parts of another triangle, the third angle must also be congruent, ensuring that both triangles are congruent overall.

Answer 1

The Triangle Angle Sum Theorem says that the total of the inside angles in a triangle adds up to 180 degrees. This theorem is useful for showing the Angle-Angle-Side (AAS) congruence rule. It means that if two angles and the side that is not between them in one triangle are the same as those in another triangle, then the third angle has to be the same too, which confirms that both triangles are congruent or identical in shape.