![]() ![]() Select a word from Column B that best fits the description in Column A. Shows the perimeter of the circle (the length around the circle), so is the circumference. Is a line segment that goes all the way across the circle and passes through the centre, so is a diameter. Is a line segment from the centre of the circle to a point on the circumference, so is a radius. Which of the labels identifies the circumference of the circle?Ī diagram of a circle is given.Which of the labels identifies a radius of the circle?.Which of the labels identifies a diameter of the circle?., and are labels for parts of the circle. In the diagram below, is the centre of the circle. A line segment from the centre of the circle to a point on the circumference is called a radius.Įxercise 12.2: Identify parts of a circle.A line segment that goes all the way across the circle and passes through the centre is called a diameter.The perimeter of a circle (the length around the circle) is called its circumference.We use special names for the different parts of a circle. A square has four sides.Ī circle is a 2D shape with a curved edge, so a circle is not a polygon. A square is also a polygon.ĭifferent: A triangle has three sides. A rhombus has four equal sides.Ĭompare a triangle and a square. A rhombus also has two pairs of parallel sides.ĭifferent: A parallelogram has two longer sides and two shorter sides. Similar: A parallelogram has two pairs of parallel sides. A parallelogram has two pairs of parallel sides.Ĭompare a parallelogram and a rhombus. A parallelogram is also a quadrilateral.ĭifferent: A trapezium has one pair of parallel sides. A rhombus has two acute angles and two obtuse angles.Ĭompare a trapezium and a parallelogram. A rhombus also has four equal sides.ĭifferent: A square has four right angles. A rectangle has two longer sides and two shorter sides.Ĭompare a square and a rhombus. ![]() A rectangle also has four right angles.ĭifferent: A square has four equal sides. The properties and different parts of a circle are explained further on.Įxercise 12.1: Compare two-dimensional shapesĬompare a square and a rectangle.The triangle shown is an equilateral triangle, which has all three sides equal in length and all three angles equal. There are different types of triangles.All the sides and angles can be different sizes. A triangle has three sides and three angles.The sides may all be different in length.A trapezium has one pair of parallel sides.Two of the angles are acute (more closed) angles, and two are obtuse (more open) angles.A parallelogram has two pairs of opposite sides that are parallel and equal.The opposite sides of a rectangle are parallel. ![]() The longer side of a rectangle is the length and the shorter side is the breadth. A rectangle has two pairs of equal sides.The opposite sides of a square are parallel.A square has four equal sides and four right angles. ![]() The properties of these two-dimensional shapes are listed below. Quadrilateral A quadrilateral is a polygon that has four sides and four angles. Polygon A polygon is a closed flat shape with three or more straight sides. All of them are examples of quadrilaterals. You have worked with squares, rectangles, parallelograms, rhombuses and trapeziums before. There is a whole group of polygons with four sides, and they are the quadrilaterals. A polygon with five sides is called a pentagon and a polygon with six sides is a hexagon. We name polygons by counting the number of straight sides that they have. We use a special name for the 2D shapes that are formed by straight lines. A circle is also a 2D shape, but a circle has a curved edge. All the sides of a square are straight lines. Chapter 12: Two-dimensional shapes 12.1 Types and properties of shapesĪ two-dimensional (2D) shape has two dimensions that we can measure: we can measure the length and we can measure the breadth (sometimes called the width) of the shape. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |