Listen to the text again and fill in the gaps.

3-Dimensional, 3-Dimensional, this means the shape or something has 1)_____ dimensions that means a curves up and 2)_____, side to side and front and ­­­3)_____. That is 3-D. The opposite would be 2-D. So on the 4)_____ screen everything is 2-D. This is up and down and side to side. For 3-D you need 3-D 5)_____ for depth perception.

SPEAKING

12.Work in small groups; name the things which are usually round, triangle or square.

13.Imagine that you are a professor preparing for a lecture on Geometric Figures and Shapes. Think about the main ideas that you would like to cover in this lecture. You may also use the information from the text.

WRITING

14. Imagine that you are an examiner and you have to prepare some questions on the topic «Geometric Figures». Read the text again and use it to make a list of questions the students will have to answer at the exam. The following opening questions may help you.

- What is the difference between the …?

- How can we calculate the area/perimeter of …?

- How many straight/curved sides/angles …?

GRAMMAR IN USE

These exercises can help you to practise grammar topic “Comparisons” (See Appendix 1 p. 203 – 205) and do the following exercises.

Complete the table of adjectives.

adjective	comparative	superlative
accurate	more accurate	the most accurate
pure
tall
hard
heavy
thin
far
impractical

Use the information from the table to complete the sentences below.

Bridge	Types of bridge	Length	Built
Humber Bridge, England	suspension
Golden Gate Bridge, USA	suspension
Verrazano Narrows, USA	suspension
Quebec Bridge, Canada	cantilever
Firth of Forth Railway Bridge, Scotland	cantilever
Commodore John Barry, USA	cantilever
New River Gorge, USA	steel arch
Sydney Harbour Bridge, Australia	steel arch

The Humber Bridge is the (a) ____ (long) bridge listed in the table above. It is (b) ____ (long) than the Golden Gate Bridge in the USA but it isn't as (c)____ (old). The Verrazano Narrows Bridge in the USA is (d) ____ (new) than the Golden Gate Bridge but (e) ____ (old) than the Humber Bridge. The (f) ____ (long) cantilever bridge is the Quebec Bridge in Canada. It is 28 metres (g) ____ (long) than the Firth of Forth Railway Bridge in Scotland which is over 110 years (h) ____ (old). The (i) ____ (new) cantilever bridge is the Commodore John Barry which is also the (j) ____ (short). The Sydney Harbour Bridge is (k)____ (short) and (l) ____ (old) than the New River Gorge.

Complete the table of adverbs.

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