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# Departmental Workshops: 2D Shapes

This page has been archived. The content was correct at the time of original publication, but is no longer updated.
Created on 24 October 2008 by ncetm_administrator
Updated on 27 April 2010 by ncetm_administrator

# Departmental Workshops - 2D Shapes

These workshops are written to provide your mathematics team with structured professional development you can deliver in-house utilizing all members' expertise and knowledge. We believe 3 – 6 modules per year could be an ideal balance.

This module explores the language and notation associated with 2D shapes and effects on areas and volumes of shapes and solids. The first activity proposes the enlargement of photographs to help students to understand the concepts.

Objectives related to this topic are:

• identify and use angle, side and symmetry properties of triangles and quadrilaterals; explore geometrical problems involving these properties, explaining reasoning orally, using step-by-step deduction supported by diagrams
• solve geometrical problems using side and angle properties of equilateral, isosceles and right-angled triangles and special quadrilaterals, explaining reasoning with diagrams and text; classify quadrilaterals by their geometrical properties
• know that if two 2-D shapes are congruent, corresponding sides and angles are equal
• explain how to find, calculate and use:
– the sums of the interior and exterior angles of quadrilaterals, pentagons and hexagons
– the interior and exterior angles of regular polygons

Overview (pdf file)
Resource Sheet HT2.2DS.1 (pdf file)
Resource Sheet HT2.2DS.2 (pdf file)
Resource Sheet HT2.2DS.3 (pdf file)
Resource Sheet HT2.2DS.4 (pdf file)
Resource Sheet HT2.2DS.5 (pdf file)

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