Three Dimensional Geometry — Class 12 Maths Solution

exemplar objective MCQ NCERT,Exemp.Q.33,Page.238
Question

The reflection of the point $(\alpha ,\beta ,\gamma )$ in the XY-plane is

  • (a) $(\alpha ,\beta ,0)$
  • (b) $(0,0,\gamma )$
  • (c) $( - \alpha , - \beta ,\gamma )$
  • (d) $(\alpha ,\beta , - \gamma )$ ✓ Correct
Step-by-step Solution
Correct answer: option (d)

In XY-plane, the reflection of the point $(\alpha ,\beta ,\gamma )$ is $(\alpha ,\beta , - \gamma )$.

NCERT & Exemplar solution for CBSE Class 12 Mathematics, Three Dimensional Geometry. Curated by Sachin Sharma. Free for all students.