Finding Angles in Triangles

Description

By the end of this unit, students will be able to apply the properties of angles at a point to calculate unknown angles.

Links to Curriculum

Key Stage 3: Geometry and Measures

derive and illustrate properties of triangles, quadrilaterals, circles, and other plane figures [for example, equal lengths and angles] using appropriate language and technologies
derive and use the sum of angles in a triangle and use it to deduce the angle sum in any polygon, and to derive properties of regular polygons

Target Ages

What's Included

Three-part Lesson
Self-marking Activities
Fluency, Reasoning and Problem-solving Questions.
Engaging Drag and Drop Activities
Interactive Self-marking Worksheet
Printable Worksheets to Consolidate Learning

Connected Resources

Angle Properties of a Polygon

Angle Sum in Polygons

Area and Perimeter
of Composite Shapes

Area and perimeter of parallelogram and trapezia

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Finding Angles in Triangles