• CHAPTER 17 Angles and triangles The sum of the three angles of a triangle is always 180°. opposite angles. Exercise 17.2 Calculate the size of each unknown angle in these diagrams, Give reasons for...

• CHAPTER 17<br>Angles and triangles<br>The sum of the three angles of a triangle is always 180°.<br>opposite<br>angles.<br>Exercise 17.2<br>Calculate the size of each unknown angle in these diagrams,<br>Give reasons for your answers.<br>1<br>63°<br>27<br>17<br>a =<br>b= 36<br>81 P<br>p= 99<br>An of a is to the sum of the two c<br>

Extracted text: • CHAPTER 17 Angles and triangles The sum of the three angles of a triangle is always 180°. opposite angles. Exercise 17.2 Calculate the size of each unknown angle in these diagrams, Give reasons for your answers. 1 63° 27 17 a = b= 36 81 P p= 99 An of a is to the sum of the two c

Jun 04, 2022

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• CHAPTER 17 Angles and triangles The sum of the three angles of a triangle is always 180°. opposite angles. Exercise 17.2 Calculate the size of each unknown angle in these diagrams, Give reasons for...

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