1 / 12

D. N. A.

D. N. A. y. PQRS~ABCD. 12. x. 21. z. 10. 15. 30. Find the scale factor of PQRS to ABCD. Find the value of x. Find the value of y. Find the value of z. Find the perimeter of PQRS. Find the perimeter of ABCD. Find the ratio of the perimeter of PQRS to the perimeter of ABCD. K. Y.

penny
Download Presentation

D. N. A.

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. D. N. A. y PQRS~ABCD 12 x 21 z 10 15 30 Find the scale factor of PQRS to ABCD. Find the value of x. Find the value of y. Find the value of z. Find the perimeter of PQRS. Find the perimeter of ABCD. Find the ratio of the perimeter of PQRS to the perimeter of ABCD.

  2. K Y J L X Z SAS  Similarity Theorem • If one angle of one triangle is congruent to an angle of a second triangle and the lengths of the sides including these angles are proportional, then the triangles are similar. ass Pantograph

  3. S 4 5 P Q 15 12 R T Prove RTS ~ PSQ S  S (reflexive prop.) SPQ  SRT SAS  ~ Thm.

  4. N P 15 12 Q 10 9 R T Are the two triangles similar? NQP  TQR Not Similar

  5. Determine the similar triangles. 5. Find x, AC, and ED. 6. Find x, JL, and LM. 7. Find x, EH, and EF.

  6. In the figure, , and ABC and DCB are right angles. Determine which triangles in the figure are similar. Are Triangles Similar? Lesson 3 Ex1

  7. In the figure, OW = 7, BW = 9, WT = 17.5, and WI = 22.5. Determine which triangles in the figure are similar. A.ΔOBW ~ ΔITW B.ΔOBW ~ ΔWIT C.ΔBOW ~ ΔTIW D.ΔBOW ~ ΔITW Lesson 3 CYP1

  8. ALGEBRAGiven , RS = 4, RQ = x + 3, QT= 2x + 10, UT = 10, find RQ and QT. Parts of Similar Triangles Lesson 3 Ex2

  9. Since because they are alternate interior angles. By AA Similarity, ΔRSQ ~ ΔTUQ. Using the definition of similar polygons, Parts of Similar Triangles Substitution Cross products Lesson 3 Ex2

  10. Parts of Similar Triangles Distributive Property Subtract 8x and 30 from each side. Divide each side by 2. Now find RQ and QT. Answer:RQ = 8; QT = 20 Lesson 3 Ex2

  11. INDIRECT MEASUREMENT On her trip along the East coast, Jennie stops to look at the tallest lighthouse in the U.S. located at Cape Hatteras, North Carolina. At that particular time of day, Jennie measures her shadow to be 1 feet 6 inches in length and the length of the shadow of the lighthouse to be 53 feet 6 inches. Jennie knows that her height is 5 feet 6 inches. What is the height of the Cape Hatteras lighthouse to the nearest foot? A. 196 ft B. 39 ft C. 441 ft D. 89 ft Lesson 3 CYP3

  12. Geometry – Practice Workbook Do not write in the workbook. Write your answers on a separate sheet of paper. Complete: p. 43 #1 – 8 all p. 42 #1 – 5 odd p. 41 # 1 – 15 odd

More Related