SECTION 08

Practice Arcade

Four activities that cover the whole lesson: a knowledge quiz, a convex/concave sorting task, an endless missing-angle challenge and a symmetry counting game. Every answer is checked instantly.

QUIZ 01

Polygon Knowledge Quiz

Question 1 / 6Score 0

A polygon with 7 sides is called:

SORT 02

Convex or Concave?

Sort every shapeCorrect 0 / 6
Regular pentagon

Regular pentagon

Arrow-shaped quadrilateral

Arrow quadrilateral

L-shaped hexagon

L-shaped hexagon

Regular octagon

Regular octagon

Star-shaped concave polygon

Star-shaped octagon

Isosceles trapezium

Trapezium

SOLVE 03

The Missing Angle Challenge

Round 1Streak 0

A decagon has these known interior angles. Find the missing angle.

134° + 141° + 148° + 134° + 141° + 148° + 134° + 141° + 148° + x = 1,440°

Figure of a decagon
GAME 04

Symmetry Counter

Equilateral triangle
Equilateral triangle

How many axes of symmetry does this shape have?

Remember: a regular polygon has as many axes as sides.