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

Question 30

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