The DAV Maths Book Class 4 Solutions and **DAV Class 4 Maths Chapter 10 Worksheet 1 **Solutions of Angles offer comprehensive answers to textbook questions.

## DAV Class 4 Maths Ch 10 WS 1 Solutions

Question 1.

Tick (✓) the figures where an angle is formed.

Answer:

(b), (c) and (g)

Question 2.

Draw any four angles in your notebook.

Answer:

### DAV Class 4 Maths Chapter 6 Worksheet 1 Notes

Point:

A point is an exact location.

Line segment:

Let A and B are two points.

The straight path from A to B is called the line segment AB. It is denoted by \(\overline{A B}\).

Line:

A line is an endless straight path that extends in both directions. A line has no end points. It is denoted by \(\overline{A B}\).

Ray:

A ray is a straight path having one end point and extending endlessly in one direction only. It is denoted by \(\overline{A B}\).

Acute Angle:

The angle whose measure is less than 90° is called an acute angle.

Obtuse Angle:

The angle whose measure is more than 90° is called an obtuse angle

Right Angle:

The angle whose measure is equal to 90° is called as right angle.

Straight Angle:

The angle of 180° is called as straight angle.

Question 1.

Identify the following as ray, line or line segment.

Answer:

(a) Ray

(b) Line segment

(c) Line

(d) Ray

(e) Line segment

(f) Line.

Question 2.

How many line segments are there in each?

Answer:

(a) 5

(b) 6

(c) 12

(d) 7

Question 3.

Match the following:

A line segment has | one end point |

→ represents a | no end points |

A ray has | two end points |

A line segment is a part | ray |

A line has | measured |

A line segment can be | of a line |

Answer:

A line segment has | two end points. |

→ represents a | ray |

A ray has | one end point |

A line segment is a part | of a line |

A line has | no end points |

A line segment can be | measured. |

Question 4.

Construct the following line segments.

(a) XY = 3 cm

Answer:

(b) CD = 4 cm

Answer:

(c) AB = 12 cm

Answer:

(d) PQ = 9 cm

Answer:

The concept of Angles:

Two rays with the same end point form an angle.

Two rays are AB and AC.

End point of AC is A.

End point of AB is A.