Question Detail

GET 102 GEOMETRIC CONSTRUCTION: CONIC SECTIONS Objective Question

Question

In the Ellipse Foci Method, how are the focal points (F1 and F2) located?
Options
A By drawing an arc from point C or D with radius OA (half of the major axis) to cut the major axis.
Correct Answer
B By bisecting the major axis (AB) and marking two points.
C By measuring a fixed distance from the center along the minor axis.
D By intersecting radial lines drawn from the center with the minor axis.
Correct Answer

Option A is the correct answer.

Detailed Explanation

Page 7, Step 2 explicitly states: 'Find the focal points by drawing an arc from point C or D with radius OA (1/2 of major axis) to cut the major axis at F1 and F2.'

Hint

Remember that OA represents half of the major axis.

Question Info