Triangle Geometry

Last week with Mrs A we studied the geometry of triangles. We looked at Equilateral triangles, Scalene triangles and Isosceles triangles. There are also three main angles, Obtuse angles, Acute angles and Right angles.

All triangles are polygons with three sides, three interior  angles that all add up to 180 degrees.

Triangles come in different shapes and sizes and each type has a different name.

Equilateral Triangle

Equilateral triangles have three equal sides.

They have three equal angles, always 60 degrees.

They always have acute angles (less than 90 degrees).

Isosceles Triangle

Isosceles triangles have two equal sides.

They have two equal angles.

Their angles are usually acute.

Scalene Triangle

Scalene triangles have no equal sides.

They have no equal angles

Their angles are obtuse (more than 90 degrees)

Working on our triangles