![]() ![]() Therefore, the basic formula for the perimeter of a regular pentagon is given below. In this case, the perimeter can be calculated with the help of the formula, Perimeter = a + a + a + a + a, which is 5a. Let us consider a regular pentagon of side length 'a'. Now, if it is a regular pentagon, it means all five sides are of equal length. We know that the perimeter of a pentagon is the sum of the lengths of all its sides. The formulas differ according to the known dimensions. Now, let us read about the formulas that are used to find the perimeter of a pentagon. Each exterior angle of a regular pentagon is 72°.Each interior angle of a regular pentagon is 108°.The sum of all the interior angles of a pentagon is 540°. ![]() We can identify and distinguish a regular pentagon with the help of the following properties: Observe the following regular pentagon to relate to its properties given below. ![]() There are some basic properties that help us to identify a pentagon. The word 'pentagon' is derived from the Greek word 'Penta' which means 'five', and 'gon' which means 'angle'. An irregular pentagon is one in which the sides are not equal and the angles are not of equal measure. Regular and Irregular PentagonĪ regular pentagon is a pentagon in which all five sides are of equal length and all the interior angles are of equal measure. The perimeter of a pentagon is expressed in linear units like inches, yards, centimeters, and so on. Since a pentagon is a five-sided polygon, all the five sides can be added to find its perimeter. state and explain each types of quadrilateral.The perimeter of a pentagon is the total measure of its boundary and it is calculated by adding the length of all its sides. list and explain each types of triangles.Ħ. explain the meaning of plane shape with examples.Ĥ. Meaning and Types of Angles | The Use of Parallel and Transversal Lines to Determine Corresponding Angles, Alternate Angles and Vertical Opposite Angles Term 3 Week 4 Mathematicsġ. To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson. Pupil’s Activities – Participate actively in the summary of the lesson and write as instructed. Teacher summarizes the lesson on the board with appropriate evaluation. Pupil’s Activities – Identify and describe each property of a circle.ġ3. Teacher uses the chart to discuss each property of a circle with appropriate illustrations. Teacher displays chart showing a circle with all the properties.ġ2. Teacher uses the activity 5 to discuss the meaning and types of polygon with their properties.ġ1. Teacher displays different types of polygon and guides pupils to compare the number of sides, measure and record the sides and angles of each type of polygon.ġ0. Teacher uses the activity 5 to discuss the meaning and types of quadrilateral with their properties.ĩ. Teacher displays different types of quadrilateral and guides pupils to measure and record the sides and angles of each type of quadrilateral.Ĩ. Teacher uses the activity 5 to discuss the meaning and types of triangles with their properties.ħ. Teacher displays different types of triangles and guides pupils to measure and record the sides and angles of each types of triangle.Ħ. Teacher uses the pupils drawing to introduce the lesson and leads a discussion on the meaning and types of plane shapes.ĥ. Teacher ask the groups or pairs to drawing the following shapes – triangle, square, rectangle and circle.Ĥ. Teacher organizes the pupils in groups or pair depending on the size of the class.ģ. Based on this, he/she asks the pupils some questions Ģ. To introduce the lesson, the teacher revises the previous lesson. To deliver the lesson, the teacher adopts the following steps:ġ. The basic plane shapes are triangle, square, rectangle, oval, circle, and polygons. The points where two sides meet are called corners.Ī side is a straight line that makes part of the shape, and a corner, or vertex, is where two sides meet. The straight lines that make up a plane shape are called sides. Plane shapes are two-dimensional, e.g., squares, triangles, and circles. Plane shapes are closed flat figure that have different characteristics such as the number of sides angles and corners (vertices). Plane shapes are two dimensional figures such as triangles, quadrilaterals and circles. Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons.ĬONTENT OF THE LESSON LESSON 1 – INTRODUCTION Choose a suitable and appropriate methods for the lessons. ![]()
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