4. Using a pencil and a ruler, draw the following triangles on the boards below. The fi rst one has been done for you.


An isosceles triangle.


Now draw an equilateral triangle.


Puzzler Can you use a pencil and ruler to change the shapes below into new shapes?


Draw a scalene triangle.


Change me into 4 triangles.


Parallelograms


A parallelogram has four sides. Opposite sides are parallel and equal in length. It has no lines of symmetry unless it is a square, rectangle or rhombus. Usually one pair of edges is longer than the other. Opposite sides are equal.


1. Using a ruler and a pencil, draw 4 parallelograms in your copy. Mark in the following on each:


a) Parallelogram 1 – parallel lines c) Parallelogram 3 – obtuse angles


b) Parallelogram 2 – acute angles


d) Parallelogram 4 – measure each line and write down the length to prove that opposite sides are equal.


128 2-D Shapes


Change me into 2


semi-circles.


Change me into 4 triangles.


Change me into 3 triangles.


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