What is geometry is hl?
HL is a criterion that proves congruence between right triangles. Unlike the other congruency postulates (SS, SAS, ASA, and AAS), the HL criterion is unique to right triangles.
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The HL criterion is one of the five ways to determine if two triangles are congruent. You will use this criterion in lessons to prove the congruence of triangles, and it is an important skill for all students.
Hypotenuse Leg Theorem
The hypotenuse leg theorem is a criterion that proves if the hypotenuse and corresponding leg of a triangle are equal to the hypotenuse and corresponding leg of another right triangle, then these two triangles are congruent.
This criterion is similar to the SS criterion, which is a criterion that proves two triangles are congruent if the legs and the hypotenuse of one triangle are equal to the legs and hypotenuse of another.
You will need to know the hypotenuse of a triangle and the corresponding leg in order to use this criterion, so it is important to be familiar with the angles of the hypotenuse.
HL also differs from the other triangle congruence criterion postulates in that it is only used with the hypotenuse and the corresponding leg of a triangle. In the other criterion postulates, all three criteria are tested to see if two triangles are congruent.
IB HL Courses
IB students have the choice of taking any HL class they want, so you might choose to take an HL course in a subject that you think will be easier to learn or more flexible for your schedule. However, you need to be aware that some HL courses may not be offered at your high school, so make sure you check with your school to find out which HL courses it offers before taking one.
CPCTC
This acronym stands for Congruent Parts of Congruent Triangles. It is a useful shortcut when you need to prove that the corresponding parts of a pair of triangles are congruent. You can quickly identify this shortcut by looking at the side and angle pairs of a right triangle.