Trapezium: A quadrilateral in which at least one pair of opposite sides are parallel is called a trapezium. The sum of the four angles of a quadrilateral measures 360°.įollowing are the different types of quadrilaterals that you will learn in this chapter: If the two angles of a quadrilateral have a common arm, then the angles are called consecutive or adjacent angles. If the two angles of a quadrilateral do not have a common arm, then the angles are called opposite angles. Two sides of a quadrilateral figure that do not have a common endpoint are called opposite sides of a quadrilateral.Ī diagonal of a quadrilateral is the joining of the opposite vertices by a line segment. intersect each other, are called consecutive sides. Two sides of a quadrilateral figure which have a common endpoint i.e. In a quadrilateral figure, four sides are the four line segments between the vertices, eg. Some special parallelograms: Rhombus, Rectangle, SquareĪ quadrilateral is made up of four line segments with four vertices normally named A, B, C and D. Kinds of quadrilaterals: Trapezium, Kite, Parallelogram Sum of the measures of the exterior angles of a polygon Topics Discuss in the Chapter Quadrilateral To solve these problems, you must have a clear understanding of the chapter Quadrilateral and its topics. Three angles of a quadrilateral are 45°, 90° and 120°. Find its perimeter.įind the sum of all internal angles of a regular pentagon. Lengths of the two adjacent sides of a parallelogram are 12 cm and 8 cm. Find the measure of each angle of the parallelogram. The measure of two adjacent angles of a parallelogram is in the ratio of 7 : 3. Practice Problems Based on the Chapter Quadrilaterals Class 9 But before going to your textbook questions, let us solve these problems to evaluate your understanding of Quadrilaterals. Using these problems, you can solve your textbook problems easily. So, you have solved all types of problems related to quadrilaterals. (iv) diagonals are perpendicular to each other (iv) diagonals are perpendicular to each Other (vii) one of the diagonal bisects the other Download Class 8 Science NCERT Solutions to help you to revise complete syllabus and score more marks in your examinations. Vedantu is a platform that provides free CBSE NCERT Solution and other study materials for students. By joining with us, you may also contact the professors on the panel. You may get the PDF version of essential questions for Class 8 Mathematics Chapter 3 from Vedantu's website at any time and on any device. Students may use CBSE Important Questions for Class 8 Mathematics to prepare for critical questions in examinations. Children will also learn to calculate the measure of angles missing in the figure. Chapter 3 of Class 8 Maths deals with different kinds of quadrilaterals and their properties. Students can practice these questions to score good marks. Important Questions for Class 8 Chapter 3 - Understanding Quadrilaterals is based upon the basic concepts of Quadrilaterals and the questions given in the segment by Vedantu will help students prepare for final exams.

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