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2 questions · self-marked practice — reveal the answer and mark yourself.

Question 15 Marks
Identify the symmetrical instruments from your mathematical instrument box.
Answer
$(i)$
$(ii)$
$(iii)$
$(iv)$
$(v)$
A protractor
A divider
A ruler (scale)
A eraser
A pencil
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Question 25 Marks
Complete the following table:
No. Shapes Rough figure Number of lines of symmetry
$(i)$ Scalene triangle $0$
$(ii)$ Isosceles triangle $1$
$(iii)$ Equilateral triangle    
$(iv)$ Rectangle    
$(v)$ Square    
$(vi)$ Parallelogram    
$(vii)$ Rhombus    
$(viii)$ Line    
$(ix)$ Line segment    
$(x)$ Angle    
$(xi)$ Isosceles trapezium    
$(xii)$ Kite    
$(xiii)$ Arrow head    
$(xiv)$ Semi-circle    
$(xv)$ Circle    
$(xvi)$ Regular pentagon    
$(xvii)$ Regular pentagon    
Answer
No. Shapes Rough figure Number of lines of symmetry
$(i)$ Scalene triangle $0$
$(ii)$ Isosceles triangle $1$
$(iii)$ Equilateral triangle $3$
$(iv)$ Rectangle $4$
$(v)$ Square  
$(vi)$ Parallelogram $0$
$(vii)$ Rhombus $2$
$(viii)$ Line Infinitely Many
$(ix)$ Line segment $1$
$(x)$ Angle $1$
$(xi)$ Isosceles trapezium $1$
$(xii)$ Kite $1$
$(xiii)$ Arrow head $1$
$(xiv)$ Semi-circle $1$
$(xv)$ Circle Infinitely Many
$(xvi)$ Regular pentagon $5$
$(xvii)$ Regular hexagon $6$
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