19.Use the expressions of agreement and disagreement and describe these objects in pairs.
Begin like this:
- This is a triangle, isn't it?
- Absolutely right.
- It has three angles and two sides.
- No, you are wrong. It has three angles and three sides.
20. Complete the chart.
VOCABULARY
| English word | Transcription | Translation | |
| 1. | calculation | ||
| 2. | point | ||
| 3. | line | ||
| 4. | straight | ||
| 5. | curve | ||
| 6. | circle | ||
| 7. | square | ||
| 8. | angle | ||
| 9. | acute angle | ||
| 10. | obtuse angle | ||
| 11. | right angle | ||
| 12. | plane | ||
| 13. | parallel | ||
| 14. | triangle | ||
| 15. | rectangle | ||
| 16. | octagon | ||
| 17. | heptagon | ||
| 18. | hexagon | ||
| 19. | pentagon | ||
| 20. | decagon | ||
| 21. | sphere | ||
| 22. | cube | ||
| 23. | oval | ||
| 24. | semi-circle | ||
| 25. | triangular | ||
| 26. | Rectangular | ||
| 27. | square | ||
| 28. | circular | ||
| 29. 30. | cylindrical spherical |
Numbers and Fractions
1. Learn the following table:
Cardinal Numbers
Ordinal Numbers
2. Learn how to read large numbers:
Divide the number into units of hundreds and thousands:
400,000 = four hundred thousand (no s plural)
If the number includes a smaller number, use "and" in British English:
450,000 = four hundred and fifty thousand
400,360 = four hundred thousand three hundred and sixty
Fractions
3. Learn how to read fractions:
| Symbol | Word |
| 1/8 | One eighth |
| 1/5 | One fifth |
| 1/4 | One quarter |
| 3/4 | Three quarters |
| 1/3 | One third |
| 2/3 | Two thirds |
| 1/2 | One half |
Percents
4. Learn how to read percents:
Phone Numbers
5. 
Learn how to read phone numbers:
Each figure is said separately.
24 - two four
The figure 'O' is called oh.
105 - one oh five
Pause after groups of 3 or 4 figures (last group).
376 4705 - three seven six, four seven oh five
If two successive figures are the same, in British English you would usually use the word double (in American English you would just say the figure twice)
376 4775 - BE: three seven six, four double seven five
376 4775 - AE: three seven six, four seven seven five
6. Learn how to read dates:
Dates
In English, we can say dates either with the day before the month, or the month before the day:
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The first of January / January the first.
Remember to use ordinal numbers for dates in English.
(The first, the second, the third, the fourth, the fifth, the twenty-second, the thirty-first etc.)
Years
For years up until 2000, separate the four numbers into two pairs of two:
1965 = nineteen sixty-five
1871 = eighteen seventy-one
1999 = nineteen ninety-nine
For this decade, you need to say "two thousand and " when speaking British English:
2001 = two thousand and one
2009 two thousand and nine
7. Complete the puzzle. Write the numbers in words:
