#### Home / Interactive Lessons / Shape / GCSE / Year 9 Term 6

Students extend their understanding of angles in a triangles to calculate missing angles in a quadrilateral.  As learning progresses they calculate unknown angles using a combination of angle properties, such as, angles about a point, on a line and in triangle.
##### Differentiated Learning Objectives
• All students should understand that a quadrilateral is made up to two triangles and therefore has a sum of 360 degrees.
• Most students should be able to calculate an unknown angle with a quadrilateral.
• Some students should be able to prove there are 360° within a quadrilateral by considering external angles
SKU: 038

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