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ParentMail Shape, Space & Measure

 Word/Term Meaning Analogue clock A clock which tells the time using an hour hand to indicate the hour and a minute hand to indicate minutes to and past the hour. Capacity The term used when measuring how much fluid fits inside a container. Measured in millilitres and litres. Circle A 2D shape with one curved face and no vertices. Clockwise and anti-clockwise A way of indicating the direction of a turn. Clockwise involves a turn to the right as if following the hands of a clock, anti-clockwise involves a turn to the left, against the direction of a clock’s hands. Cone A 3D shape with two faces, one circular, one edge and one vertex. Converting into the same units Understanding the connection between units of measurement and how they can be converted one to another. For example, length can be measured in centimetres or metres; there are 100cm in a metre. Degree The unit of measurement for angles and also for temperature. Represented by the symbol ° for angles (e.g. 90°) or °C (degrees Centigrade) and °F (degrees Fahrenheit) for temperature. Digital clock A clock which tells the time using numbers only. Cone A 3D shape with two faces, one circular, one edge and one vertex. Cube A 3D shape with six square faces, 12 edges and eight vertices. Cuboid A 3D shape with six faces, some or all of which are rectangular, 12 edges and eight  vertices. Corner Also known as a vertex. The place on a 3D shape where three faces meet. Also used to describe the angles of a 2D shape. Cylinder A 3D shape with two circular faces, one rectangular face, two edges and no vertices. Diagonal A straight line that joins two vertices of a shape that are not next to each other. Edge The place on a 3D shape where two faces meet. Face Any flat surface of a 3D shape. Faces can be flat or curved and of many different shapes. Geometry The study of shape, position and movement. Includes such aspects as 2D and 3D shapes, angles, symmetry, pattern, tessellation, turns and position. Hexagon 2D shape with six sides and six vertices. Horizontal A horizontal line runs from left to right joining equivalent points on two opposite sides of a shape. Irregular shapes 2D shapes whose sides and angles are not all the same Mass This refers to the weight of an object. It is measured in grams (g) and kilograms (kg). Measurement In Maths, children learn about different forms of measurement, including length, weight (mass), capacity, time and temperature. Mirror line A line which can be drawn onto a shape to show that both sides have exact  reflective symmetry. Net What a 3D shape would look like if it was opened out flat. Octagon A 2D shape with eight sides and eight vertices. Pentagon A 2D shape with 5 sides and 5 vertices. Prism A 3D shape with flat sides and identically shaped end faces. The cross section of a prism is the same all the way through. Examples are a triangular prism and a hexagonal prism. Pyramid (square- based) A 3D shape with 4 triangular faces, one square face and 5 vertices. Pyramid (triangular-based) A 3D shape with 4 triangular faces and four vertices. Quadrilateral Any shape with four sides. Rectangle A 2D shape with four straight sides and four right angles. Opposite sides are the same length. Reflection of shapes Drawing the reflection of a shape in a mirror line means drawing the shape on the other side of the line as if it has been flipped over the line. Reflective symmetry When a shape or pattern is reflected in a mirror line or line of symmetry. The reflected shape will be an exact mirror image of the original, the same size and the same distance from the mirror line. Regular shapes 2D shapes with closed sides, where all sides are the same length and all angles are the same. Right angle An angle of exactly 90°. The two lines which make a right angle are perpendicular. Side One of the lines, straight or curved, which encloses a 2D shape. Sphere A 3D shape with one curved face, no edges and no vertices. Square A 2D shape with four equal sides, four vertices and four right angles. Triangle A 2D shape with three straight sides and three vertices. Can be equilateral, isosceles, right-angled or scalene. Turns A movement in a space, either clockwise or anticlockwise. A quarter turn is 90°, a half turn is 180°, a three-quarter turn is 270° and a full turn is 360°. Vertex/vertices Also known as corner/s. The place on a 3D shape where three faces meet. Also commonly used to describe the corners of a 2D shape. Vertical A line which runs up and down a page or shape, from top to bottom. It will intersect a  horizontal line at right angles. Volume The amount of space taken up by an object. 2D shapes Shapes which are flat, having only two dimensions – height/length and width. 3D shapes Shapes which have a solid form, having 3 dimensions – height/length, width and depth. 24 hour clock The 12 hour clock runs from 1 o’clock to 12 o’clock twice per day. The 24 hour clock runs from 00:00 hours (midnight or 12.00 am) through 24 hours to 23:59 (11.59 pm). Top