NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 9: Symmetry and Practical Geometry - Multiple Choice Questions
Question 17

Question. 17

The instrument in the geometry box having the shape of a triangle is called a

(A)

Protractor

(B)

Compasses

(C)

Divider

(D)

Set-square

Detailed Answer with Explanation:

Question 17: The instrument in the geometry box having the shape of a triangle is called a ____.

Step-by-step explanation (very simple):

Look at the shapes of common tools in a geometry box.
- Protractor: A half-circle or full circle used to measure angles (like 180° or 360°). Not a triangle.
- Compasses: Two legs with a pencil on one side, used to draw circles. Not a triangle.
- Divider: Two sharp metal legs used to measure distances on paper. Not a triangle.
- Set-square: A flat plastic triangle with a right angle. It usually comes in two types:
  - 45°–45°–90° triangle
  - 30°–60°–90° triangle
Match the question with the correct tool.

The question asks for the tool that is shaped like a triangle. That is the set-square.
Therefore, the correct answer is: D) Set-square.

Final Answer:

D) Set-square