from: category_eng
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| 1. H | |
| 6a=90 therefore, 2a=30 | |
| 2. f | |
| 3. G | |
| Can you guess the answer? I want you to increase the guessing power. | |
|
15a =180 what is the 4a? |
| 4. H | |
| This is about isosceles triangle | |
| 5. J | |
| 6. H | |
| 7. K | |
| 8. C | |
| 5a=180 Therefore, 2a will be ... | |
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2a=72. |
| 9. H | |
| We need a sum to calculate the average | |
| 270/5= |
| 10. G | |
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(a+b+c+d)+90=360 |
| 11. | |
| what is the angle BAD? | |
| 12. D | |
| A+C+(3C)=180. A=20 | |
| 13. J | |
| looks like more than 180 | |
| (a+b+c)+180=180*3 |
| 14. j | |
| p+q+75=360 | |
| 15. D | |
| Fix the third one | |
| 16. J | |
| 17. D | |
| Mathematical expression of what u think (Your Idea). - | |
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360 - 6*180/8 =? Another idea? 180+45? why 45? |
| 18. J | |
| Move angles to use the relationship. | |
| 19. G | |
| 4*180/6 | |
| 20. k | |
| Trapezoid means that two lines are parallel so that you can move the angle. | |
| 21. D | |
| Different Ideas ... Different approach. | |
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1) 3*180 -40= 2) 360 +140= |
| 22. C | |
| How can you use the relationship? | |
| 23. F | |
| Can you see the similar triangles? Then use the fact. | |
| 24. F | |
| Draw another picture your own. This is about similar triangle. | |
| 25. E | |
| there are two congruent triangles. | |
| 26. d | |
| Can you see two congruent triangles? | |
| 27. G | |
| Need to use congruent! | |
