We have heard the word angle within the word triangle. We know that tri means three, so a triangle must have three angles. We looked at triangles and we saw that they each have three straight sides and three corners.
Some P5s remembered that a right angle is when two perpendicular lines meet. We used that knowledge to work out that an angle must be the distance between two lines.
We are now off to look for examples of angles in the class. Check back later to see how we get on.