We recommend you are comfortable with the topics below before you start the selected video.
Appreciate that base angles of an isosceles triangle are equal.
Understand angles properties of a quadrilateral.
Know that the sum of the angles on a straight line is 180 degrees and angles around a point 360 degrees.
Recognise vertically opposite, alternate, corresponding and cointerior angles.
Know that the sum of the angles in a triangle is 180 degrees.
Select a video from the topic tree to learn about that topic. When viewing a video, use the 'Practise This Skill' button for questions on that topic.
Logged in users can see their viewing history here and earn trophies for watching.