NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 9: Symmetry and Practical Geometry - Fill in the Blanks
Question 23

Question. 23

If an angle of measure \(80^\circ\) is reflected in a line of symmetry, then the reflection is an _____ of measure _____.

Answer:

an Angle of measure \(80^\circ\).

Detailed Answer with Explanation:

  1. We start with an angle that measures:
    ( m(angle ext{original}) = 80^circ )
  2. Reflect this angle across a line of symmetry (the mirror line). Reflection keeps lengths and angle sizes the same.
  3. Therefore, the image angle has the same measure as the original:
    ( m(angle ext{image}) = m(angle ext{original}) )
  4. Substitute the given value:
    ( m(angle ext{image}) = 80^circ )
Open NCERT PDF
NCERT Exemplar Solutions Class 6 – Mathematics – Unit 9: Symmetry and Practical Geometry – Fill in the Blanks | Detailed Answers