The functions of cartilage in your skeletal system include  cushioning your joints and creating passages for air when  flexibility is required. Cartilage cushions the areas â¦ between your  vertebra and joints.
exists and is an alternate of . LL Congruence theorem says: If the two legs of one right triangle are congruent to the two legs of another right triangle, then the two right triangles are congruent.
If the definition is: two triangles are congruent if one is the image of the other under an isometry, then it is a theorem. If the definition is: two triangles are congruent if their corresponding sides and corresponding angles are congruent, CPCTC is a reiteration of the definition. Therefore it would not be a theorem in any standard US high school text.