Kite: (1) The diagonals are perpendicular A quadrilateral to one another with exactly two pairs of equal (2) One of the diagonals bisects the consecutive sides. other. (3) In the figure m∠B = m∠D but m∠A m∠C. ≠ 2. Sum of the measures of the interior angles of a polygon is (n-2)180 . 3. Sum of the measures of the exterior angles of a polygon is 360 . CHAPTER 4 PRACTICAL GEOMETRY – 1. Five measurements can determine a quadrilateral uniquely. 2. A quadrilateral can be constructed uniquely if the length of its four sides and a diagonal are given. 3. A quadrilateral can be constructed uniquely if its two diagonals and three sides are known. 4. A quadrilateral can be constructed uniquely if its two adjacent sides and three angles are known. 5. A quadrilateral can be constructed uniquely if its three sides and two included angles are given. CHAPTER 5 DATA HANDLING – 1. Data mostly available to us in an unorganised form is called raw data. 2. In order to draw meaningful inferences from any data, we need to organise the data systematically. 3. Frequency gives the number of times that a particular entry occurs. 4. Raw data can be and presented systematically through frequency ‘grouped’ ‘grouped distribution’.
Kite: A quadrilateral with exactly two pairs of equal consecutive sides. (1) The diagonals are perpendicular to one another (2) One of the diagonals bisects the other. (3) In the figure m∠B = m∠D but m∠A ≠ m∠C. 2. Sum of the measures of the interior angles of a polygon is (n-2)180 3. Sum of the measures of the exterior angles of a polygon is 360 CHAPTER 4 – PRACTICAL GEOMETRY 1. Five measurements can determine a quadrilateral uniquely. 2. A quadrilateral can be constructed uniquely if the length of its four sides and a diagonal are given. 3. A quadrilateral can be constructed uniquely if its two diagonals and three sides are known. 4. A quadrilateral can be constructed uniquely if its two adjacent sides and three angles are known. 5. A quadrilateral can be constructed uniquely if its three sides and two included angles are given. CHAPTER 5 – DATA HANDLING 1. Data mostly available to us in an unorganised form is called raw data. 2. In order to draw meaningful inferences from any data, we need to organise the data systematically. 3. Frequency gives the number of times that a particular entry occurs. 4. Raw data can be ‘grouped’ and presented systematically through ‘grouped frequency distribution’. . .
Class_8__BirdsEyeView_Maths_v1_Class%20VIII_Mathematics_2015-2016.docx