The document Worksheet Question - Understanding Elementary Shapes Class 6 Notes | EduRev is a part of the Class 6 Course Mathematics (Maths) Class 6.

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**Ques 1: 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 one-fourth 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)****Ans: **(a) → (iii) → (g)

(b) → (iv) → (f)

(c) → (i) → (i)

(d) → (ii) → (j)

(e) → (v) → (h)**Ques 2: 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 ****Ans: **(i) South

(ii) North**Ques 3: You are standing in a class-room facing north. In what direction will you be facing after making a quarter turn in clockwise direction?****Ans: **East**Ques 4: Write five capital letters of the English alphabet which show perpendicular lines/line segments.****Ans: **E, F, H, I, J, L, T (any five)**Ques 5: 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.****Ans: **(1) ∆ABC: Equilateral and acute angled triangle

(2) ∆DEF: Isosceles triangle and acute angled triangle

(3) ∆GIH: Scalene triangle and right angled triangle

(4) ∆JKL: Isosceles triangle and obtuse angled triangle

(5) ∆MNO: Scalene triangle and obtuse angled triangle

(6) ∆PQR: Scalene triangle and acute angled triangle

(7) ∆STV: Isosceles triangle and right angled triangle**Ques 6: Fill in the blanks:(a) Each angle of a rectangle is a ____________ angle.**

(b) All

(c) Trapezium

(d) Opposite

(e) Square

(f) Triangle

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 |

**Ans:**

Shope | Example | No. of Faces | No. of vertices | No. of edges |

Cuboid | Math book | 6 | 8 | 12 |

Cube | Die | 6 | 8 | 12 |

Triangular Pyramid | Egypt Pyramid | 4 | 4 | 6 |

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