Korea Grade 12 Geometry free practice questions with answers
Read question 1 and its full worked answer from paper 1 of our 20-paper Korea Grade 12 Geometry set, then download the 4-page PDF. These are original practice questions, not official past papers. Page updated 3 November 2026.
포물선 (y − 5)² = 24x 의 준선의 방정식이 x = k 일 때, k의 값은? [2점]
A −24
B −16
C −12
D −8
E −6
Correct answer: E — −6
- 꼭짓점이 (0, 5), p = 6 이므로 준선은 x = h − p = 0 − 6 = −6 입니다.
- 따라서 k = −6 입니다.
- 다른 선택지가 틀린 이유:
- A (−24): 정답과 비슷하지만 같지 않습니다. 마지막 계산 단계를 다시 확인해 보세요.
- B (−16): 정답과 비슷하지만 같지 않습니다. 마지막 계산 단계를 다시 확인해 보세요.
- C (−12): 결과를 2배로 했습니다.
- D (−8): 정답과 비슷하지만 같지 않습니다. 마지막 계산 단계를 다시 확인해 보세요.
포물선 위의 점에서 초점까지의 거리와 준선까지의 거리는 같습니다. y² = 4px 의 초점은 (p, 0), 준선은 x
= −p 입니다.
Your sample is downloading. Liked it? Korea Grade 12 Geometry Paper 1 is the full paper: 30 questions in 100 minutes on the 2015 revised Geometry course (conic sections, plane vectors, space figures and coordinates; 21 five-choice and 9 short-answer), written in Korean, no calculator, with a worked solution for every question.
Get Paper 1 for A$11.99See all 20 papers from A$11.99More free South Korea National Curriculum (Grades 10 to 12) samples
Questions about this sample
What is in the Korea Grade 12 Geometry free sample?
The first 3 questions from paper 1 of the set, in the real exam layout, followed by the step-by-step worked answers. It is a 4-page PDF; this page shows question 1 with its answer.
How many full Korea Grade 12 Geometry papers are there?
20 original papers for Grade 12 (고3) students in South Korea following the 2015 revised curriculum: Geometry (기하). Each is 30 questions in 100 minutes on the 2015 revised Geometry course (conic sections, plane vectors, space figures and coordinates; 21 five-choice and 9 short-answer), written in Korean, no calculator, with a worked solution for every question. Papers start at A$11.99 and download instantly as a PDF.
Are these official past papers?
No. The sample is taken from our own original practice paper and is not an official past paper or affiliated with any exam authority.