Vocabulary - Shape: 2D

The vocabulary list focuses on two-dimensional (2D) shapes, which are figures that have length and width but no depth. Among these shapes, a circle is a round shape with all points equidistant from the centre, and variations include a semi-circle, which is half of a circle. Triangles are three-sided polygons, with specific types named based on their sides and angles: equilateral triangles have all sides equal, isosceles triangles have two equal sides, scalene triangles have no equal sides, and right-angled triangles have one 90-degree angle.

Other common 2D shapes include squares, with four equal sides and right angles, and rectangles, which have opposite sides equal and right angles, sometimes referred to as oblongs. More complex shapes are also introduced, such as pentagons and hexagons, with five and six sides respectively, and octagons with eight sides. Quadrilaterals are four-sided polygons that can take various forms, including squares, rectangles, parallelograms, rhombuses, and trapeziums. Vocabulary related to angles, such as reflex, obtuse, and acute, is also covered, along with tools like the protractor for measuring them. The list further includes terms describing the properties and positions of lines, such as horizontal, vertical, perpendicular, parallel, and diagonal, as well as terms like regular and irregular to distinguish between shapes with equal or unequal sides and angles.