Triangles

Summary

triangles are polygons with three sides.

there are several types of triangles.

the inside angles of a triangle are supplementary.

Key Skills

  • recognise and name types of triangles. e.g. isosceles etc.
  • know and use the angle properties of triangles.

Vocabulary

polygon, triangle, congruent, scalene triangle, isosceles triangle, equilateral triangle, interior angle, exterior angle.