K. Determine if two Remember the 5 27. 28. triangles are ways that you can congruent. do this: SSS, SAS, ASA, AAS, HL UNIT 2: Use the following to review for you test. Work the Practice Problems on a separate sheet of paper. What you need to Things to remember know & be able to do When the center of dilation is the origin, you can multiply each coordinate of A. Perform a 1. Dilate with k = ½. 2. Dilate with k = 2. the original figure, or pre- dilation with a image, by the scale factor given scale factor to find the coordinates of the dilated figure, or image. B. Find the Set up a proportion by 3. 4. matching up the missing side for corresponding sides. Then, similar figures. solve for x. 5. 6. C. Determine if 2 triangles are Remember the 3 ways that 7. ~ ______ by______ ΔGNK 8. similar, and write you can do this: AA, SAS, ~ ______ by______ ΔABC SSS the similarity statement. 9. Find sin A. 10. Find tan B. D. Find sin, cos, Just find the fraction 11. Find cos B. and tan ratios using SOHCAHTOA 12. Find tan A.
K. Determine if two triangles are congruent. Remember the 5 ways that you can do this: SSS, SAS, ASA, AAS, HL 27. 28. UNIT 2: Use the following to review for you test. Work the Practice Problems on a separate sheet of paper. What you need to know & be able to do Things to remember A. Perform a dilation with a given scale factor When the center of dilation is the origin, you can multiply each coordinate of the original figure, or pre- image, by the scale factor to find the coordinates of the dilated figure, or image. 1. Dilate with k = ½. 2. Dilate with k = 2. B. Find the missing side for similar figures. Set up a proportion by matching up the corresponding sides. Then, solve for x. 3. 4. 5. 6. C. Determine if 2 triangles are similar, and write the similarity statement. Remember the 3 ways that you can do this: AA, SAS, SSS 7. ΔGNK ~ ______ by______ 8. ΔABC ~ ______ by______ D. Find sin, cos, and tan ratios Just find the fraction using SOHCAHTOA 9. Find sin A. 10. Find tan B. 11. Find cos B. 12. Find tan A.