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