Geometry (angles): Leafy Angles

Further Challenges

• Take a trip into your school grounds and use this table to record the different angles that you are able to find. Do the angles appear in living or non-living things? Are they acute, obtuse or right angles? Can you estimate the size of each angle using the useful information below the table as a guide?
• When a bird gapes (opens its beak), an interesting angle is made:

Mohamed looked at the photograph of the ostrich and robin (above) and said, “The angle made by the ostrich’s beak is much bigger than the angle made by the robin’s beak. I know this because an ostrich’s beak is much bigger than a robin’s beak.”

Do you agree with Mohamed? Discuss your answer with a partner.