Exercises: Polygons, Construction, and Angle Sums

Use the interior angle sum formula $(n-2) \times 180\degree$ and remember: dividing by $n$ to get a single angle only works for regular polygons.

Grade 7·16 problems·~25 min·Uganda NCDC Primary 7 Mathematics·lesson·construction-03

Work through problems with immediate feedback

Recall / Warm-Up

Review what makes a polygon regular before working with angle sums.

What is the sum of the angles at a single point (all the way around, a full turn)?

$180\degree$

$90\degree$

$360\degree$