Basic Geometrical Ideas Exercise 4.4 Examples for Practice 1). Draw a rough sketch of a triangle ABC. Mark a point P in its interior and a point Q in its exterior. Is the point A in its exterior or in its interior? Point A is neither in the exterior nor in the interior, […]
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Basic Geometrical Ideas Exercise 4.3 1). Name the angles in the given figure. Angles in the given figure are ∟DAB, ∟ABC, ∟BCD, and ∟CDA 2). In the given diagram, name the point(s). (a). In the interior of ∟DOE Point A (b). In the exterior of ∟EOF Point A, C,
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Basic Geometrical Ideas Exercise 4.2 1). Classify the following curves as (i) open or (ii) Closed (a). Open (b). Closed (c). Open (d). Closed (e). Closed 2). Draw rough diagrams to illustrate the following. (a). Open curve (b). Closed curve 3). Draw any polygon and shade it’s interior. 4). Consider the given figure and
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Playing with Numbers Exercise 3.6 1). Find the HCF of the following numbers: a). 18, 48 b). 30, 42 c). 18, 60 d). 27, 63 e). 36, 84 f). 34, 102 g). 70, 105, 175 h) 91, 112, 49 i). 18, 54, 81 j). 12, 45, 75 Answer: a). 18, 48 Factors of 18
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The Way The World Looks Questions with (*) sign are open-ended questions. Page 52 Gappu looked down. He could see the bed, the chair, one table with books on it and the other table with a bottle, a jug, fruits, etc. Look for these things in the photo. Page 53 Can you think why Gappu
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Playing with Numbers Exercise 3.4 1). Find the common factors of : (a) 20 and 28 Factors of 20 = 1, 2, 4, 5, 10, 20 Factors of 28 = 1, 2, 4, 7, 14, 28 Common factors = 1, 2, 4 (b) 15 and 25 Factors of 15 = 1, 3, 5, 15 Factors
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Playing with Numbers Exercise 3.3 1). Using divisibility tests, determine which of the following numbers are divisible by 2; by 3; by 4; by 5; by 6; by 8; by 9; by 10 ; by 11 (say, yes or no): Number 2 3 4 5 6 8 9 10 11 128 990 1586
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Playing with Numbers Exercise 3.2 Properties of Whole Numbers: 1). What is the sum of any two a). odd numbers b). even numbers Answer: 1a). The sum of any two odd numbers is always an even number. 1b). The sum of any two even numbers is always an even number. 2). State
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A Trip to Bhopal Questions with (*) sign are open ended questions. Ms. Meenakshi and Mr. Rakesh are talking about the number of buses needed. Ms. Meenakshi: – We will need 4 buses. Mr. Rakesh: I think we need at least 5. Ms. Meenakshi:- Each bus has 50 seats. Mr. Rakesh: – Let us
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How Many Squares? Page 34 Measure the side of the square on dotted sheet. Draw as many rectangles as possible using 12 such squares. How many rectangles could you make? We can make 7 right angles. Which of these rectangles has the longest perimeter? Rectangles 1 and 2 have the longest perimeter. Which of these
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