Title: Angles Sums
Room 28
Learning Objectives
Grade F
To investigate and then remember that the angles in a triangle add to 180o.
How do we know that the angles in an equilateral triangle will always be 60o?
Grade E
To investigate and then remember that the sum of the angles in a quadrilateral is 360o.
How can you show that the angles in a quadrilateral always add to 360o?
To be able to define and then calculate the exterior angle of a triangle and quadrilateral.
Can you prove that the external angle of a triangle is equal to the two opposite sides?
Resources
Grade F
Angles in a triangle
Triangle Trail (print)
Grade E
Angles in a quadrilaterals
Homework
Learning Objectives for next lesson:
Grade G-C
To use the past paper to fully understand which topics you need to revision.
What topics do you need to revise?
