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Similar triangles: Missing sides

Similar triangles: Missing sides. 8cm. 80 o. 70 o. Intelligent Practice. Silent Teacher. Narration. Your Turn. 4cm. 80 o. 6cm. 70 o. 8cm. Practice. What is the scale factor? Find the missing lengths. Triangles not drawn to scale. Example. Your turn. 4cm. 90 o. 3÷2 = 1.5cm.

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Similar triangles: Missing sides

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  1. Similar triangles:Missing sides 8cm 80o 70o Intelligent Practice Silent Teacher Narration Your Turn 4cm 80o 6cm 70o 8cm Practice

  2. What is the scale factor? Find the missing lengths. Triangles not drawn to scale Example Your turn 4cm 90o 3÷2 = 1.5cm 2cm 20o 6÷3 = 2cm 80o 70o 3cm 30o 70o 3cm 80o 90o 3cm 6cm 2x2 = 4cm 4x3 = 12cm 20o 30o 70o 70o 6cm 9cm x3 x2

  3. What is the scale factor? Find the missing lengths. Triangles not drawn to scale Example Your turn 4cm 20o 3÷3 = 1cm 2cm 90o 70o 9÷2 = 4.5cm 70o 3cm 80o 30o x2 3cm 80o 90o 3cm 6cm 3x3 = 9cm 4x2 = 8cm 30o 20o 70o 70o 9cm 6cm x3

  4. What is the scale factor? Find the missing lengths. Triangles not drawn to scale Example Your turn x2 9÷3 = 3m 14÷2 = 7m 12m 12m 10m 4.5÷3 = 1.5m 9m 10x2 = 20m x3

  5. Intelligent Practice – Find the length of every missing side Triangles not drawn to scale 3. 1. 2. 4. 8cm 8cm 8cm 8cm 80o 80o 80o 80o 70o 70o 70o 70o 4cm 3cm 4cm 4cm 70o 70o 70o 80o 3cm 6cm 6cm 6cm 6cm 80o 80o 70o 30o 8cm 8cm 4cm

  6. 6. 9. 8. 7. 5. 10. 4cm 4cm 8cm 8cm 8cm 8cm 60o 80o 6cm 6cm 70o 90o 4cm 4cm 4cm 4cm 90o 90o 12cm 12cm 6cm 6cm 6cm 6cm 30o 30o 3cm 2cm 2cm 4cm

  7. Practice – Find the length of every missing side Triangles not drawn to scale 4. 3. 2. 1. 6÷1 = 6cm 3÷1.5 = 2cm 6x2 = 12cm 6÷2 = 3cm 8cm 8cm 8cm 8cm 80o 80o 80o 80o 8x2 = 16cm 4÷2 = 2cm 4x1 = 4cm 70o 70o 70o 70o 4cm 4cm 4cm 4cm X1.5 x2 x1 x2 8x1.5 = 12cm 70o 70o 70o 80o 6cm 6cm 6cm 6cm 3cm 80o 80o 70o 30o 8cm 8cm 4cm

  8. 7. 10. 9. 8. 5. 6. 3÷1.5 = 2cm 6x4 = 24cm 6x2= 12cm 8cm 4cm 4cm 8cm 8cm 8cm 60o 80o Angles not the same Not similar shapes! 8÷2 = 4cm 4÷4 = 1cm 6x13 = 18cm 6cm 6cm 8x1.5 = 12cm 70o 90o 6cm 4cm 4cm 4cm 4cm x2 X1.5 x3 x4 90o 90o 12cm 12cm 6cm 6cm 6cm 6cm 30o 30o 4cm 2cm 2cm 3cm 6cm Angles not the same Not similar shapes! 18cm

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