2013 2H2
Thursday 15 August 2013
Friday 26 July 2013
Polygon & Construction
· A polygon is a
closed plane figure made up of line segments.
· The number of
angles is equal to the number of sides.
Interior Angles of a Polygon
If n represents the number of sides of a polygon, then The sum of the interior angles of the polygon
Each interiorof an nsided regular polygon

Exterior Angles of a Polygon
Sum of the exterior angles of any polygon is .
An exterior of an nsided regular polygon

Perpendicular Bisector of a Line Segment
In the diagram, AB is the perpendicular bisector of
PQ at M.
·
M is the midpoint of PQ.
·
·
· Any point on
AB is equidistant from P and Q.


Construction:
Step 1:
Taking P and Q as centres and a radius greater than half of
PQ, draw arcs above
and below PQ such that the arcs cut each other at A and B.
Step 2: Join A to B with a straight line,
bisecting PQ at M.
 
Angle bisector
In the diagram, QC is the angle bisector of .
·
·
·
Any point on QC or QC produced is equidistant from
PQ and RQ.


Construction:
Step 1:
With the compass point at the vertex Q and suitable radius, draw an arc
cutting
QP at A and QR at B.
Step 2:
Taking A and B as centres, and the same radius, draw arcs to cut
each other at C.
Step 3: Join Q to C with a straight line. 
Wednesday 24 July 2013
reward system
Plus points
A1/A2: 2 pts for A1; 1pt for A2 in ur LT, CT and exam
Minus points
Disrespect
No hmk
Off task
unprepared
Rewards
5ptslollipop
10ptskit kat
15ptskinder bueno
20ptsferrero rocher
Rewards
5ptslollipop
10ptskit kat
15ptskinder bueno
20ptsferrero rocher
Friday 28 June 2013
briefing on 1st July
 Haze
 Target setting
 Math file
 foolscap / exercise bk
 Chapters to be covered within 11 wks
 Proportion
 Congruency & Similarity
 Set
 Probability
 Mensuration
 Statistics
 Level test/class test/common test/NPQ
Sunday 26 May 2013
Saturday 27 April 2013
Friday 19 April 2013
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