# Ch 39: MTEL Mathematics (Elementary): Proof of Theorems

Refresh your knowledge of key geometry theorems as you study for the MTEL Elementary Mathematics exam. In this chapter, you'll find a number of helpful video lessons that will quickly get you up to speed on a number of theorems.

## MTEL Elementary Mathematics: Proof of Theorems - Chapter Summary

Proof of theorems is introduced in this chapter of the study guide. These lessons provide an introduction to the subject, including applications of similar triangles, triangle congruence postulates, and congruence proofs. The converse of a statement, and congruency are also covered by the lessons in this Proof of Theorems chapter. Other topics in this chapter include:

• Midpoint theorem
• Properties of right triangles
• Special right triangles
• The Pythagorean theorem
• The hypotenuse angle, hypotenuse leg, and angle-angle-side theorems

Knowledgeable instructors walk you through each subject using short, engaging video lessons, and are available to answer any questions you may have. Videos are accompanied by transcripts with important terms bolded, to help you study. The jump feature under the Timeline tab allows you to skip directly to main subjects within the videos, so you can review the subjects you need the most help with.

15 Lessons in Chapter 39: MTEL Mathematics (Elementary): Proof of Theorems
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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