1 / 29

Review : Solving Systems

Review : Solving Systems. x+y. x. 2y+3. 12. Find the values of x and y that make the following triangles congruent. Congruent Triangles (CPCTC). Two triangles are congruent triangles if and only if the c orresponding p arts of those c ongruent t riangles are c ongruent.

levi-campbell
Download Presentation

Review : Solving Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Review: Solving Systems x+y x 2y+3 12 Find the values of x and y that make the following triangles congruent.

  2. Congruent Triangles (CPCTC) Two triangles are congruent triangles if and only if the corresponding parts of those congruent triangles are congruent. • Corresponding sides are congruent • Corresponding angles are congruent

  3. Congruence Statement When naming two congruent triangles, order is very important.

  4. Third Angle Theorem If two angles of one triangle are congruent to two angles of another triangle, then the third angles are also congruent.

  5. Congruence Shortcuts Side-Angle-Side (SAS) Congruence Postulate: If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.

  6. Side-Side-Side Congruence Postulate SSS Congruence Postulate: If the three sides of one triangle are congruent to the three sides of another triangle, then the two triangles are congruent.

  7. Congruence Shortcuts Angle-Side-Angle (ASA) Congruence Postulate: If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.

  8. Congruence Shortcuts Angle-Angle-Side (AAS) Congruence Theorem: If two angles and a non-included side of one triangle are congruent to the corresponding two angles and the non-included side of another triangle, then the two triangles are congruent.

  9. Base Angles Theorem: If two sides of a triangle are congruent, then the angles opposite them are congruent.

  10. Converse of the Base Angles Theorem: If two angles of a triangle are congruent, then the sides opposite them are congruent.

  11. Equilateral Triangle Theorem A triangle is equilateral if and only if it is equiangular.

  12. Practice

  13. Practice

  14. Practice

  15. Congruence in Right Triangles

  16. Vocabulary Right Triangles

  17. Hypotenuse-Leg Theorem Hypotenuse-Leg (HL) Congruence Theorem: If the hypotenuse and a leg of a right triangle are congruent to the hypotenuse and leg of another right triangle, then the two triangles are congruent.

  18. To use the HL Theorem, you must show that three conditions are met: • There are two right triangles • The triangles have congruent hypotenuses • There is one pair of congruent legs

  19. Using the HL Theorem

  20. Using the HL Theorem Statements Reasons 1. 2. 3. 4. 5. 1. 2. 3. 4. 5.

  21. Using the HL Theorem Statements Reasons 1. 2. 3. 4. 1. 2. 3. 4.

  22. Which are congruent by HL?

  23. Which are congruent by HL?

  24. Prove the triangles are congruent Given All Right angles are congruent Reflexive HL Theorem

  25. What else do you need to prove the triangles are congruent?

  26. Prove the two triangles are congruent 1. Given 2. Definition of midpoint 3. HL Theorem

More Related