Think-Top Educational Institute
Standard 5 · SEA Mathematics

Geometry Review: Angles, Triangles, Symmetry

Review the geometry the SEA keeps testing: triangle types, angles and turns, solids and their faces, circles, parallel lines and lines of symmetry. Each exercise marks itself as your child goes, explains the answer, and awards stars.

The Think-Top SEA practice app icon: Ms. Dumas waving inside a gold ring
What your child practises

Skills in this topic

Naming triangles by sides and anglesRight angles, and angles greater or smallerTurns and facing directionLines of symmetryFaces, edges and vertices of solidsCentre, radius and diameter of a circleParallel and perpendicular linesNets of solids
Free to try

4 free exercises in this topic

Name that triangle
Right angle or not?
Turns and facing
Lines of symmetry

Plus adds 8 more exercises on this topic.

Inside the app

How an exercise works

SEA practice app: Exercises inside a topic
Exercises inside a topic
SEA practice app: Instant feedback on every answer
Instant feedback on every answer
SEA practice app: Stars, ranks and badges
Stars, ranks and badges
Plus

Every topic has free exercises to start. Plus unlocks the full set and every mock paper for TT$150 per child per month (US$25), on up to 3 devices.

Get Plus
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More Standard 5 Maths topics

Want a teacher in the room as well?

Our small SEA classes in St. Augustine and online begin with a real diagnostic, so lessons start from exactly where your child is. Practice at home fits beautifully alongside.

See our SEA classes