# Constructing Triangles using Compasses and Protractors

#### What's Included

• Smart Notebooks Presentation
• Activ Inspire Flipchart
• Lesson Plan
• Microsoft PowerPoint Presentation
• Differentiated Worksheet

# Constructing Triangles using Compasses and Protractors

Students learn how about constructing triangles using compasses and protractors using SSS, SAS and ASA.  As learning progresses students are challenged to measure angles and lines to scale and construct quadrilaterals.

The start of the lesson recaps symmetry by asking students to identify which shape can not be quarter of a square.  The plenary challenges students to construct an arrowhead using two congruent triangles.

##### Differentiated Learning Objectives
• All students should be able to construct a triangle using SSS.
• Most students should be able to construct a triangle using SSS and SAS,
• Some students should be able to construct a triangle using SSS, SAS and ASA.

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