Building in Perth (author’s photo)

1. Can you find an acute, right, obtuse, straight and reflex angle in the image above?

2. Fold an A4 sheet of paper into six sections. In each section draw one of the following angles, estimate it’s size and then measure it. Make sure you label each drawing.

(a) obtuse

(b) right

(c) acute

(d) reflex

(e) complementary angles

(f) supplementary angles