Q1: Fill in the blanks:
(a) Each angle of a rectangle is a ____________ angle.
(b) ____________ sides of a rhombus are of equal length.
(c) In a ____________, there is only one pair of parallel sides.
(d) The ____________ sides of a rectangle are equal in length.
(e) A rhombus with four right anlges is called a ____________.
(f) The polygon with least number of sides is ____________.
Q2: Complete the following table:
(One is done as examplesphere)
Shape  Example  Number of faces  Number of vertices  Number of Edges  
(1)  Cuboid  —  —  —  — 
(2)  Cube  —  —  —  — 
(3)  Triangular pyramid  —  —  —  — 
(4)  Sphere  Football  No face  No vertex  No edge 
Q3: Identify the following triangles according to the measurement of sides and angles given. Also mention the type of triangle:
(e.g. (1) ∆ABC is an equilateral triangle and acute angled triangle.
Q4: Match the column B with A and C:
A  B  C 
(a) Straight angle  (i) An angle whose measure is less than 90°.  (f) One fourth of a revolution. 
(b) Right angle  (ii) An angle whose measure is between 90° and 180°.  (g) Half of a revolution. 
(c) Acute angle  (iii) An angle whose measure is 180°.  (h) More than half a revolution 
(d) Obtuse angle  (iv) An angle whose measure is 90°.  (i) Less than onefourth of a revolution. 
(e) Reflex angle  (v) An angle whose measure is between 180° and 360°.  (j) Between ¼ and ½ of a revolution. 
For example (a) → (iii) → (g)
Q5: A sailor is rowing a boat due north. In which direction will he be rowing if he turns it through (i) a straight angle (ii) a complete angle
Q6: You are standing in a classroom facing north. In what direction will you be facing after making a quarter turn in clockwise direction?
Q7: Write five capital letters of the English alphabet which show perpendicular lines/line segments.
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1. What are elementary shapes? 
2. How do you identify the properties of elementary shapes? 
3. What are the different types of triangles? 
4. How can you determine if a shape is a polygon? 
5. What is the difference between a regular and an irregular shape? 

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