Foundation June 2017 Paper 3 Q21
21
Show that these two triangles are mathematically similar. (2)
| Answer | Mark | Notes |
|---|---|---|
| Shown (supported) | M1 | method to divide a pair of corresponding sides, eg \(7.5 \div 3\ (= 2.5)\) or \(3 \div 7.5\ (= 0.4)\), or states scale factor is 2.5 or 0.4 or method to work out the size of an angle, eg \(\tan^{-1}\left(\dfrac{7.5}{10}\right)\) (= 36.8 to 36.9) |
| C1 | shows or states that all sides are enlarged by the same factor or works out a pair of corresponding angles and states that the two triangles have the same angles |