NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 2: Geometry - Fill in the Blanks
Question 30

Question. 30

The number of common points in the two angles marked in Fig. 2.21 is ____.

Answer:

4

Detailed Answer with Explanation:

Step 1: An angle has a vertex and two arms.

Step 2: A common point means a point that lies on both angles.

Step 3: Look at the figure:

  • The two angles share the same vertex. So the vertex is one common point.
  • There is an overlapping part where both angles lie on top of each other.
  • In that overlap, there are three marked points (shown as dots) that belong to both angles.

Step 4: Count all common points:

  • Vertex → 1 point
  • Marked points in the overlap → 3 points

Total common points:

1 + 3 = 4

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