Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#1

Activity 1: Match each triangle type with its description and write your answers

on the worksheet. The first one has been done for you.

Triangle

1. acute triangle

2. equilateral triangle

3. isosceles triangle

4. obtuse triangle

5. right-angled triangle

6. scalene triangle

Description

a. one right angle

b. three different sides

c. one obtuse angle

d. three equal sides

e. two equal sides

f. three acute angles

Answers

1 → f

2 →

3 →

4 →

5 →

6 →

Activity 2: Match each description on the left with the name of the corresponding

quadrilateral. The first one has been done for you.

Description

7. two pairs of equal sides and four right angles

8. four equal sides and two pairs of equal angles

9. four different sides

10. four right angles and four equal sides

11. two parallel sides

12. two pairs of equal angles and four equal sides

Quadrilateral

a square

b trapezium

c rectangle

d rhombus

e trapezoid

f rhomboid

Answers

7 → c

8 →

9 →

10 →

11 →

12 →

Activity 4: Complete the sentences below using the words in the box. The firstone has been done for you.

13. We use a compass for drawing circles.

14. If you make a mistake you can correct it with an ___________

15. but only if you were drawing with a ________________

16. You can’t draw a 50º degrees angle without a ________________

17. You will need the ________________ for drawing parallel lines

18. With a ____________ you can draw straight lines and take measures

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#2

Activity 3: Follow the steps to draw a polygon.

a) Use ruler and pencil todraw a 8 cm segment

b) Take the compass and

measure a 6 cm radius on

the ruler

c) Place the spike of the

compass on one end of the

segment and draw an arc

over the middle

d) Do it again from the

other side

e) Now connect the

intersection of the arcs

with the ends of the

segment.

Your drawing goes here

What sort of polygon is this? _______________________________

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#3

Activity 5: The pentagon and the 5-pointed star

Follow the steps to complete the drawing:

1. Take the first circle and draw a diameterwith pencil and ruler (a straight line acrossthe middle)

2. You need to divide the circle in five equalangles (360º : 5 = 72º) → Use theprotractor to draw a 72º angle with thevertex in the centre

3. Use the compass to take the measure ofthe sector and “copy it” around the circle

4. Use the ruler to draw segments from everyvertex to the next one. You just drew aregular pentagon

5. Repeat the process but this time, draw thesegments skipping one vertex to form afive-pointed star

5. Repeat the process but this time, draw thesegments skipping two vertices to form astar

5. Repeat the process but this time, draw thesegments skipping two vertices to form astar

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#6

Activity 7: For this exercise you will work in pairs.• Before starting: take a good look at the steps in activity 6 and your drawing.• DO NOT SHOW these to your partner.• One partner will have to describe his/her drawing to the other. Use your own words. •••• The other partner will try to draw it following the instructions.

Name of your partner: …....................................

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#7

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#8

…..............................................................fold here....................................................

Activity 8: The contest (part one)

A very popular rock band has organised a design contest. They want you to send

them designs they can use for their next album cover. Use compass, protractor and

ruler to design a shape containing polygons and stars in the same circle.

See some examples in the presentation.

Name of your design: …..................................................................................................

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#9

A) B) C) D)

A) It's a .. _________________________________________________________________

_____________________________________________________________________________

B) ____________________________________________________________________________

_____________________________________________________________________________

C) ____________________________________________________________________________

_____________________________________________________________________________

D) ____________________________________________________________________________

_____________________________________________________________________________

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#11

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#12

…..............................................................fold here....................................................

Activity 10: The contest (part two)

Describe your design. Use sentences to give a description of your drawing. What

sort of polygons are there? what sort of stars? What colours are they?

You can use the descriptions in activity 9 as an example

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#13

Activity 11: The contest (final part). VOTING

Vote your favorite designs and find out which one is the corresponding description.

BALLOT Favorite

design

Description check

1st (5 points) [ ]

2nd (4 points) [ ]

3rd (3 points) [ ]

4th (2 points) [ ]

5th (1 point) [ ]

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#14

Scoring table

A.- Knowledge of the polygon names and characteristics.

Activity 1: Number of correct answers [ ] max 5

Activity 2: Number of correct answers [ ] max 5

Activity 9: Number of correct answers [ ] max 5

Activity 11: Number of correct answers [ ] max 5

--------TOTAL [ ]

B.- Knowledge of the geometry tools names and uses.

Activity 4: Number of correct answers [ ] max 5

C.- Ability to follow instructions precisely

No attempt orwrong polygon

Imprecisedrawing (notregular) and orbad presentation

Little imprecisionsand or decentpresentation

Precise drawing,nice and cleanpresentation

Activity 3 [ ] [ ] [ ] [ ]Activity 5 [ ] [ ] [ ] [ ]

Activity 6 [ ] [ ] [ ] [ ]

D.- Oral communication skills. Activity 7

No attempt Incomplete,imprecise

Some informationmissing, someimprecision

Complete andaccuratedescription

Activity 7 [ ] [ ] [ ] [ ]

E.- Creativity and artistic skills for the free design.

No attempt Use a simpledesign, 1 or 2shapes.

Use of 3 or morepolygons andstars. Use ofcolor .

Use of 5 or moreregular polygonsand stars. Use ofcolors and letters

Activity 8 [ ] [ ] [ ] [ ]

F.- Written communication:

No attempt Incomplete,imprecise

Some informationmissing, someimprecision

Complete andaccuratedescription

Name:........................................... Group:................. Date: …...............

Geometry. Unit 2: Polygons WS#15

Activity 10 [ ] [ ] [ ] [ ]