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Thursday , January 5 th

Thursday , January 5 th. Warm Up. Write 1% as a fraction What is 5% of 20. Please complete the warm up and write down your homework Please have your flashcards out and I will give you a ziploc bag  . Corny Joke of the Day. Why did Columbus go to jail?

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Thursday , January 5 th

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  1. Thursday, January 5th Warm Up Write 1% as a fraction What is 5% of 20 Please complete the warm up and write down your homework Please have your flashcards out and I will give you a ziploc bag 

  2. Corny Joke of the Day Why did Columbus go to jail? Because he double-crossed the ocean

  3. Goal Sheets Put in front of binder

  4. Similar Figures Chapter 7 section 4

  5. Vocabulary Polygon corresponding sides corresponding angles Similar Congruent

  6. Polygon A closed plane figure formed by three or more line segments that intersect only at their endpoints Can you think of any?

  7. Polygons Not

  8. Congruent Do you have any CONGRUENT shapes? Have the same size and shape EXACTALY THE SAME!!!!!

  9. Matching sides of two or more polygons are called corresponding sides Matching angles are called corresponding angles.

  10. Similar figures have the same shape but not necessarily the same size.

  11. What is angle D? <D Finding missing angles • Hint: Remember angles are the same in corresponding angles!

  12. The two triangles are similar. Find the missing length y 111 100 ___ ____ y 200 Finding Missing lengths Write a proportion using corresponding side lengths. = 200 • 111= 100 •y The cross products are equal.

  13. 22,200 100y ______ ____ 100 100 22,200= 100y y is multiplied by 100. Divide both sides by 100 to undo the multiplication. = 222 mm= y

  14. You Try!

  15. 52 50 ___ ____ y 100 The two triangles are similar. Find the missing length y and the measure of B. B A 60 m 120 m 65° 50 m 100 m 52 m 45° y Write a proportion using corresponding side lengths. = 100 • 52= 50 •y The cross products are equal.

  16. 5,200 50y _____ ___ 50 50 5,200= 50y y is multiplied by 50. Divide both sides by 50 to undo the multiplication. = 104 m= y Angle B is a corresponding angle to <A <B = 65°

  17. Are the following shapes SIMILAR? 5 in 2 in 1 in 2 in How do you know?

  18. Closing Activity • Answer the EQ on the bottom of the page. • Raise your hand when you are done and I will check your answer • Help others in your group and then begin your homework 

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