Angles in a Triangle PPT New.ppt
- 1. You are acute triangle….. ????????? ? Student Well being
- 3. Learning Objective: Apply the interior angle properties of triangles in problem solving. Learning outcomes: All Students will be able to find the unknown interior angle of a triangle using interior angle property. Most Students will be able to compute the unknown interior angle for all different types of triangles and justify their finding. Some Students will be able to calculate all the angles of different types of triangles and explain their working.
- 4. BIG QUESTION: Why are triangles the most effective tools for architecture and used in the design of buildings? UAE –Al Bahr Tower The Pineapple Building
- 5. Hands-on-Activity Step 2- Place them all adjacent to each other with their vertices joined.
- 7. Can you apply the interior angle property of a triangle to find missing angle if two angles are given? Explain how
- 8. Ahmed wants to build a triangle with angles 90˚, 60˚ and 50˚.Would he be successful? ALWAYS SOMETIMES NEVER. Justify your answer. Critical Thinking
- 9. MID PLENARY 1. In a triangle if one angle is right angle, the other two will be ________ 2. What happens if one angle of the triangle increases? Impact on the other two angles 3. Is it possible to have a triangle with two right angles?
- 10. Activity Time
- 11. Activity - 1 Group Grapes
- 12. Activity 2 Group Apples
- 13. Extension: What additional angles would make these into an ISOSCELES triangle? 1) 80o, 80o, ___ 2) 80o, 50o, ___ 3) 42o, ___, ___ 4) 88o, ___, ___ 5) 100o, ___, ___ Activity 3 Group Mangoes
- 14. Answer Key- Self Marking Group-Green Grapes 1. No (195) 2. Yes (180) Extension 1. 80 2. 44 3. 93 4. 47 5. 29 6. 74 Group-Grapes 1. 60 2. 30 3. 45 4. 114 5. 134 6. 35 Extension: 1. 50 2. 40 Group -Apple 1. 60 2. 84 3. 40 4. 60 each 5. 45, 90, 45 Extension: 1. No (185) 2. Yes (180) Group -Mango Activity 3a 1. 45, 90, 45 2. 60, 60, 60 3. 80, 80 Activity 3b 1. Always 2. Always 3. Always 4. Never 5. Sometimes Extension: 1. 20 2. 50 3. 69, 69 4. 46, 46 5. 40, 40 2. x=60
- 16. Learning Objective: Apply the interior angle properties of triangles in problem solving. Learning outcomes: All Students will be able to find the unknown interior angle of a triangle using interior angle property. Most Students will be able to compute the unknown interior angle for all different types of triangles and justify their finding. Some Students will be able to calculate all the angles of different types of triangles and explain their working.
- 17. Plenary Calculate the value of angle X 59 o 42 o X
- 18. Question 2 Calculate the value of angle X 59 o 42 o X 79 o
- 19. What is the missing angle? • A. 133 • B. 47 • C. 43
- 20. • What is the missing angle? B. 47
- 21. Can you apply the interior angle property to find these missing angles?
- 22. Can you apply the interior angle property to find these missing angles? 35º