1 Which pairs of angles are equal? Tick your answers. a) b) c) Discuss your answers with a partner. 2 a) Work out the sizes of the unknown angles and label them on the diagram. b) Angles b and e are co-interior. What is the sum of angles b and e? c) Angles c and h are also co-interior. What is the sum of angles c and h? d) What do you notice? e) Complete the sentence. Co-interior angles 3 Complete the sentences. a) Angles c and are co-interior. Angles e and are co-interior. Angles h and are co-interior. Angles b and are co-interior. b) Angles e and a are Angles e and d are Angles e and c are Angles e and g are Identify and calculate with co-interior, alternate and corresponding angles © White Rose Maths 2020 b g d h e c f 63° a d h c g a e b f a e d h b f c g