1 / 9

Chapter 8 Lesson 3

Chapter 8 Lesson 3. Objective: To apply AA, SAS, and SSS similarity. Name the postulate or theorem you can use to prove the triangles congruent. SSS. SAS. ASA. Name the SIMILARITY postulate or theorem you can use to prove the triangles congruent. AA~. SAS~. SSS~.

herrod-garza
Télécharger la présentation

Chapter 8 Lesson 3

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. Chapter 8 Lesson 3 Objective: To apply AA, SAS, and SSS similarity.

  2. Name the postulate or theorem you can use to prove the triangles congruent. SSS SAS ASA

  3. Name the SIMILARITY postulate or theorem you can use to prove the triangles congruent. AA~ SAS~ SSS~

  4. Example 1: Finding Lengths in Similar Triangles  Explain why the triangles are similar. Write a similarity statement. Then find DE. Because vertical angles are congruent. ΔABC ~ ΔEBD by the SAS~ Theorem.

  5. Example 2: Finding Lengths in Similar Triangles Find the value of x in the figure.

  6. Indirect Measurement is when you use similar triangles and measurements to find distances that are difficult to measure directly.

  7. Example 3: Indirect Measurement Geology Ramon places a mirror on the ground 40.5 ft from the base of a geyser. He walks backwards until he can see the top of the geyser in the middle of the mirror. At that point, Ramon's eyes are 6 ft above the ground and he is 7 ft from the image in the mirror. Use similar triangles to find the height of the geyser. ∆HTV ~ ∆JSV The geyser is about 35 ft. high.

  8. Example 4: Indirect Measurement In sunlight, a cactus casts a 9-ft shadow. At the same time a person 6 ft tall casts a 4-ft shadow. Use similar triangles to find the height of the cactus. X 6 4 9

  9. Assignment

More Related