<< Chapter < Page Chapter >> Page >

Mathematics

Perimeter, area and volume

Educator section

Memorandum

1.

a) Yes

b) Yes

c) Yes

Leaner section

Content

Activity: revising [lo 3.3, lo 3.7]

1. Why don’t we start by revising a bit? Get your thinking caps on!

a) Are KL and MN parallel?

b) Is OP equidistant from QR?

c) Are the following three line segments equally spaced from each other?

1.4 Use the dots as corners and draw an equilateral triangle, a square and a rectangle.

1.5 Join the dots together so that you will form a parallelogram and a rhombus.

1.6 Use the dots as corners and draw:

a) two triangles of the same shape and size

b) an equilateral triangle

c) a right-angled triangle

(You must use all the dots and you may use each dot only once).

1.7 Draw in all the diagonals of this regular pentagon. Then colour in the only polygon that has been formed.

2. See if you can draw the following (use your protractor and ruler):

2.1 Draw a pentagon where each side is 50 mm long and each corner angle is 108 degrees.

2.2 Draw an octagon where each side is 40 mm long and each corner angle is 135 degrees.

Assessment

Learning Outcome 3: The learner will be able to describe and represent characteristics and relationships between two-dimensional shapes and three-dimensional objects in a variety of orientations and positions.

Assessment Standard 3.3: We know this when the learner uses a pair of compasses, ruler and protractor to accurately construct geometric figures for investigation of own property and design of nets.

Assessment Standard 3.7: We know this when the learner draws and interprets sketches of solids from different perspectives.

Questions & Answers

What is significance of vector?
jagan Reply
what is impulse?
Enimini Reply
the product of force and time
Robert
find the flow rate of a fluid of viscosity 0.0015N-s/m³ flowing through a pipe of radius 50cm and length 100m at a pressure differential of 200000N/m²
Okoli Reply
friend ,what is the equation your question
lasitha
What is victor
Moses Reply
How are you all?
Giorgi Reply
what is the formula for momentum?
Chisom Reply
p=mv
Grant
what is the formula for angular displacement ?
lasitha
angular displacement = l/r
anand
friend ,what is the " l "?
lasitha
I have another problem,what is the difference between pure chemistry and applied chemistry ?
lasitha
l stands for linear displacement and l>>r
anand
r stands for radius or position vector of particle
anand
pure chemistry is related to classical and basic concepts of chemistry while applied Chemistry deals with it's application oriented concepts and procedures.
anand
what is the deference between precision and accuracy?
ShAmy
I think in general both are same , more accuracy means more precise
anand
and lessor error
anand
friends,how to find correct applied chemistry notes?
lasitha
what are the main concepts of applied chemistry ?
lasitha
anand,can you give an example for angular displacement ?
lasitha
when any particle rotates or revolves about something , an axis or point ,then angle traversed is angular displacement
anand
like a revolving fan
anand
yeah ,I understood now, thanks!
lasitha
o need this application in French language
Diacre Reply
Why is it that the definition is not there
Bello
what is physics
mesfin Reply
the study of matter in relation to energy
Robert
Ampher law
Zia
how do convert acceleration
Idrees Reply
multiply by 3.6
Robert
a man drops a rock into a wall
Aye Reply
then
Robert
how did John Dalton contribute to A.theory?
Angela
Atomic theory,
Angela
according to John Dalton all the matter was composed of atom and indivisible, indestructible building blocks. while the atom of different elements have different mass and size.
Rakesh
two parallel wires are 5.80cm apart and carry currents in opposite direction , as shown in figure .find the magnitude and direction of the magnetic field at point p due to two 1.50mm segments of wire that are opposite each other and each 8.00 cm from p.
Alia Reply
solve it
Barilee
how
Alia
give me its solution
Alia
where is divergence law
Roha Reply
.
jagan
the formula velocity tell me
Zakariye
v=d/t
Robert
in electrostatics
Harish
total heat of substance known as
Twinkle Reply
total substance known as?
Twinkle
mole
Robert
what is reference?
Tirtha Reply
what is avector
Law Reply
pretty much just a line with an arrow that represents the magnitude and direction of a quantity.
Shii
vector is quantity, that has magnitude and direction
michael
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Mathematics grade 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11075/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Mathematics grade 7' conversation and receive update notifications?

Ask