3. [AS3] A polygon having 5 sides with all sides and angles equal is called a . . (A) Regular hexagon (B) Pentagon 49 (C)Regular pentagon (D)Regular nonagon 4. [AS3] A polygon having 7 sides with all sides and angles equal is called a (A) Heptagon (B) Regular nonagon (C) Regular heptagon (D) Regular decagon 5. [AS3] A quadrilateral with all sides and all angles equal is called a . (A) Triangle (B) Square (C)Rectangle (D)Pentagon Very Short Answer Type Questions Column B 6. [AS3] Match the following. a. 9 sides b. 10 sides Column A c. 5 sides i. Pentagon d. 8 sides ii. Hexagon e. 6 sides iii. Octagon iv. Decagon v. Nonagon 7 [AS2] Answer the following questions in one sentence. Check whether the polygons given are regular or not. (i) EXERCISE 14.2. POLYGONS
(ii) 50 (iii) (iv) (v) 8 [AS5] Choose the correct figure. (i) Pentagon (A) (B) (C) (D) EXERCISE 14.2. POLYGONS
(ii) Hexagon 51 (A) (B) (C) (D) (iii) Quadrilateral (A) (B) (C) (D) EXERCISE 14.2. POLYGONS
(iv) Octagon 52 (A) (B) (C) (D) (v) Triangle (A) (B) (C) (D) EXERCISE 14.2. POLYGONS
9. [AS4] Match the polygons with their corresponding names. Column A Column B i. a. Pentagon ii. b. Quadrilateral iii. c. Octagon iv. d. Hexagon v. e. Triangle EXERCISE 14.2. POLYGONS 53
—— Project Based Questions —— (iv) The president of a colony in Hyderabad wants to build a path of width 5 metres around and inside a park of dimensions 155 metres by 105 metres. He wants to fence the path on all the sides with barbed wire for four rounds. Find the total amount he has to spend for the fencing if the cost of the barbed wire is Rs. 25 per metre. Draw a neat picture representing this condition. (v) Take a square ruled paper and a die. Throw the die and note the number on it. Fill as many squares as the number noted with your favourite colour. Repeat the same for ten more times and colour the number of squares accordingly with different colours. a. Find the ratio of number of squares coloured with your favourite colour and the number of squares with other colours. b. Find the ratio of the number of squares coloured with your favourite colour and the total number of squares coloured. c. Find the ratio of number of squares coloured except your favourite colour and the total number of squares coloured. (vi) Take a piece of paper and fold it in half vertically. Again fold it in half horizontallyand open it. Spill few drops of ink and fold it as before. Press the paper from both the sides together. Now unfold the paper and observe the figure. Is the design obtained symmetric? If so, draw the line(s) of symmetry for the figure. How many lines of symmetry do you get for the figure obtained? (vii) Collect atleast 10 symmetrical figures from your environment and prepare a scrap book. Also collect atleast five different rangoli patterns and draw them in your scrap book. Try and locate the symmetric portions of these patterns along with the lines of symmetry. Here are a few examples: (viii) Prepare a table showing the shapes, their names, number of faces, number of edges and number of corners of atleast five different 2–D and 3–D shapes. PROJECT BASED QUESTIONS 54
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