202110549-SUMMIT-STUDENT-WORKBOOK-MATHEMATICS-G05-PART1

17) Complete the following table. IntroducintGeomtricalFgues(Textbook, Pg. 35) Diagram Name of the Vertex Arms of an angle angle 18) Complete the following table. (Textbook, Pg. 35) Diagram Name of the Vertex Arms of an angle angle Long Answer Questions 19) State three different types of angles. What is the unit used to measure angles and what is its symbol? Solution: ……………………………………………………………………………………...….. …………………..………………………………………………………………………………… 9977 …………………..………………………………………………………………………………… …………………..………………………………………………………………………………… Powered by Angles

…………………..………………………………………………………………………………… …………………..………………………………………………………………………………… 20) Look at the pictures given. Decide whether the lines given in each picture are parallel or perpendicular to each other and write the answer in the box. (Textbook, Pg. 40) a) b) c) Short Answer Questions 21) Identify the different types of angles marked in the given alphabet. 9988 Solution: ……………………………………………………………………………………...…..

IntroducintGeomtricalFgues 22) Identify the type of angle marked in the given alphabet. Solution: ……………………………………………………………………………………...….. 23) Identify the type of angle marked in the given alphabet. Solution: ……………………………………………………………………………………...….. 24) Give two examples of parallel lines you can see in your environment. (Textbook, Pg. 40) Solution: ……………………………………………………………………………………...….. 25) Give two examples of perpendicular lines you can see in your environment. (Textbook, Pg. 40) 9999 Solution: ……………………………………………………………………………………...….. …………………………….…………………………………………………………………...….. Powered by Angles

26) You can see a pen stand in the given figure. Determine whether the marked angle ‘x’ is an acute angle, an obtuse angle or a right angle. Solution: ……………………………………………………………………………………...….. Long Answer Questions 27) Draw and name the following angles with the help of a protractor. (Textbook, Pg. 38) a) 60° b) 120° c) 90° d) 150° Solution: 110000

28) Draw and name the following angles with the help of a protractor.IntroducintGeomtricalFgues (Textbook, Pg. 38) a) 30° b) 165° c) 45° Solution: Short Answer Question 29) If the measure of ABC is 90º, what will be the measure of CBA? Solution: ……………………………………………………………………………………...….. 110011 ……………….………………………………………………………………………………...….. ……………….………………………………………………………………………………...….. Powered by Angles

Long Answer Question 30) How many angles are there in the given figure? Also, write the type of each angle. Solution: ……………………………………………………………………………………...….. …………………………………………………….…………………………………………...….. …………………………………………………….…………………………………………...….. …………………………………………………….…………………………………………...….. …………………………………………………….…………………………………………...….. Find various types of angles in your classroom and discuss those with your classmates. 110022 Make a model of an acute angle, right angle and obtuse angle with the help of ice cream sticks.

IntroducintGeom7tricalFgues Chapter 7: Circles 1) Radius, Chord and Diameter (Textbook, Pg. 41) 2) Drawing a Circle (Textbook, Pg. 41) 3) Relationship Between Radius and Diameter (Textbook, Pg. 42) 4) The Interior and the Exterior of a Circle (Textbook, Pg. 44) 5) The Circumference of a Circle (Textbook, Pg. 44) 6) An Arc of a Circle (Textbook, Pg. 45) 103 Powered by Circles

7.1: Circles ] ] Very Short Answer Questions ] 1) Write the centre of the circle given in the figure. [ ] 2) Write the radius of the given circle. [ 3) Write the chord of the given circle. [ 4) Write the radius/radii of the given circle. [ 104

5) Identify and write the diameter of the given circle. [IntroducintGeomtricalFgues ] 6) Write two arcs of the circle given. [ ] 7) Write the shorter chord of the given circle. [ ] 8) Which instrument do we use to draw a circle? [ ] 9) If the radius of a circle is 5 cm, what will its diameter be? (Textbook, Pg. 43) Solution: ……………………………………….…………………………………………...…… ……………………………………….…………………………………………...………………. 10) If the diameter of a circle is 6 cm, what will its radius be? (Textbook, Pg. 43) Solution: ……………………………………….…………………………………………...…… 105 ……………………………………….…………………………………………...………………. Powered by Circles

Short Answer Questions 11) Solve. a) If the diameter of a circle is 8 cm, what will its radius be? b) If the radius of a circle is 9 cm, what will be its diameter be? Solution: ……………………………………….…………………………………………...…… ……………………………………….…………………………………………...………………. ……………………………………….…………………………………………...………………. ……………………………………….…………………………………………...………………. ……………………………………….…………………………………………...………………. ……………………………………….…………………………………………...………………. 12) Write any one feature of a diameter. Are all the diameters of a circle of the same length? Solution: ……………………………………….…………………………………………...……. ……………………………………….…………………………………………...………………. ……………………………………….…………………………………………...………………. 13) Which is the radius of the given circle? Measure the radius of the given circle using a ruler. 106 Solution: ……………………………………….…………………………………………...……. ……….……………………………….…………………………………………...……………….

IntroducintGeomtricalFgues 14) Which is the diameter of the given circle? Measure the diameter of the given circle using a ruler. Solution: ……………………………………….…………………………………………...……. ……………………………………….…………………………………………...………………. 15) Draw a circle. Name its chord and radius. Solution: 16) Find the radii and chords of the circle given. 107 Solution: ……………………………………….…………………………………………...……. ……………………………………….…………………………………………...……………….. Powered by Circles

17) Which is the longest chord of a circle? Show it with the help of a diagram. Solution: ……………………………………….…………………………………………...……. ……………………………………….…………………………………………...………………. 18) Complete the following table by filling in the blanks. (Textbook, Pg. 44) 26 cm Radius 3 cm 12 cm Diameter 18 cm Long Answer Questions 19) In the figure given, points S, L, M and N are on the circle. Answer the questions with the help of the diagram. (Textbook, Pg. 45) a) Write the names of the arcs with end-points S and M. b) Write the names of the arcs with the end-points L and N. 108 Solution: ……………………………………….…………………………………………...……. ……………………………………….…………………………………………...……………….. ……………………………………….…………………………………………...………………..

20) Answer the following: IntroducintGeomtricalFgues a) Write the names of the arcs that points A, B, C and D in the given circle give rise to. (Textbook, Pg. 45) b) Give the names of the arcs that are made by points P, Q, R, S and T in the figure. (Textbook, Pg. 45) Solution: ……………………………………….…………………………………………...……. ……………………………………….…………………………………………...……………….. ……………………………………….…………………………………………...……………….. ……………………………………….…………………………………………...……………….. ……………………………………….…………………………………………...……………….. ……………………………………….…………………………………………...……………….. ……………………………………….…………………………………………...……………….. Short Answer Questions 21) Draw a circle of diameter 6 cm. 109 Solution: ………………………….…………………………………………...…………………. Powered by Circles

22) Draw a circle of any radius. Show one diameter, one radius and one chord on that circle. (Textbook, Pg. 42) Solution: ………………………….…………………………………………...…………………. 110 23) Draw a circle of radius 5 cm. Solution:

IntroducintGeomtricalFgues 24) The diameter of a circular playground is 100 m. Find its radius. Solution: ……………………………………….…………………………………………...……. ……………………………………….…………………………………………...……………….. ……………………………………….…………………………………………...……………….. 25) The radius of a circular plate is 30 cm. Find its diameter. Solution: ……………………………………….…………………………………………...……. ……………………………………….…………………………………………...……………….. 111 26) Draw a circle of radius 6 cm. Solution: ………………………….…………………………………………...…………………. Powered by Circles

Long Answer Questions 27) Draw a circle: a) with centre P and diameter AB of length 8 cm. Also, draw a radius PO 112 and chord MN. b) with radius AB of any length, show the arcs CBD and CED such that CED is the bigger arc.

IntroducintGeomtricalFgues Solution: 28) Draw circles with the radii given. (Textbook, Pg. 42) a) 2 cm b) 4 cm c) 3 cm Solution: Powered by 113 Circles

Short Answer Question 29) Draw two circles of radii 2 cm and 4 cm with the same centre P. What are these two circles called? Solution: 114

IntroducintGeomtricalFgues ……………………………………….…………………………………………...……………….. Long Answer Question 30) Draw a circle of radius 3 cm. Draw two diameters such that they are perpendicular to each other. What is the measure of the angle at the centre in each quarter of the circle? Solution: Powered by 115 Circles

……………………………………….…………………………………………...……………….. ……………………………………….…………………………………………...……………….. Cut a piece of paper in a circular shape. Cut the circle along one of its radii and stick the edges together. Identify the shape formed. 116 Measure and note down the circumference of different circular objects. (Textbook, Pg. 45)