Prepify11Plus
Triangles studio

Visualise triangles, reason angles, celebrate accuracy

Use the diagrams below to revisit triangle types, then tackle adaptive challenges. Every question honours the 180° rule and offers friendly explanations when you need a nudge.

Know your triangle heroes

Tap any triangle to toggle labels and remind yourself what makes each type unique.

Equilateral triangle with all sides equal 60° 60° 60° a a a
Equilateral • all sides and angles equal
Isosceles triangle with two equal sides x° x° (180 - 2x)° b b c
Isosceles • two equal sides and base angles
Scalene triangle with all sides different 48° 72° 60° 8 cm 10 cm 9 cm
Scalene • every side length unique
Select a mode to generate a triangle question.