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Reflect a triangle in an axis or the line y = x

Year 8 maths · Fieldbook Learning

Name ______________________ Date __________

Apply the reflection rule to the vertex you need.

  1. Triangle ABC has vertices A(5, 3), B(3, −4) and C(−2, −1). It is reflected: reflection in the line y = x. What are the coordinates of A'?
  2. Triangle ABC has vertices A(−4, 3), B(3, −2) and C(3, 2). It is reflected: reflection in the x-axis. What are the coordinates of A'?
  3. Triangle ABC has vertices A(3, −6), B(−5, −3) and C(5, −3). It is reflected: reflection in the x-axis. What are the coordinates of B'?
  4. Triangle ABC has vertices A(−6, −1), B(2, −1) and C(−1, 2). It is reflected: reflection in the line y = x. What are the coordinates of A'?
  5. Triangle ABC has vertices A(7, −2), B(1, −2) and C(−1, 7). It is reflected: reflection in the y-axis. What are the coordinates of C'?
  6. Triangle ABC has vertices A(−3, −2), B(4, −3) and C(8, 4). It is reflected: reflection in the y-axis. What are the coordinates of B'?
  7. Triangle ABC has vertices A(2, 7), B(4, −3) and C(5, 6). It is reflected: reflection in the x-axis. What are the coordinates of A'?
  8. Triangle ABC has vertices A(2, 5), B(2, 6) and C(6, −1). It is reflected: reflection in the x-axis. What are the coordinates of B'?
  9. Triangle ABC has vertices A(−8, 3), B(7, −6) and C(10, −3). It is reflected: reflection in the line y = x. What are the coordinates of B'?
  10. Triangle ABC has vertices A(−6, 2), B(1, −8) and C(9, 4). It is reflected: reflection in the y-axis. What are the coordinates of C'?
  11. Triangle ABC has vertices A(−10, 2), B(4, −9) and C(5, 2). It is reflected: reflection in the y-axis. What are the coordinates of C'?
  12. Triangle ABC has vertices A(6, −7), B(−8, 2) and C(−7, 1). It is reflected: reflection in the y-axis. What are the coordinates of B'?
  13. Triangle ABC has vertices A(9, 7), B(12, 3) and C(−9, −5). It is reflected: reflection in the line y = x. What are the coordinates of C'?
  14. Triangle ABC has vertices A(−6, −9), B(−2, −11) and C(−6, 10). It is reflected: reflection in the line y = x. What are the coordinates of C'?
  15. Triangle ABC has vertices A(2, −11), B(−2, −10) and C(6, −7). It is reflected: reflection in the y-axis. What are the coordinates of B'?
  16. Triangle ABC has vertices A(4, 3), B(2, 4) and C(−3, −5). It is reflected: reflection in the line y = x. What are the coordinates of C'?
  17. Triangle ABC has vertices A(−6, 4), B(14, −9) and C(4, 9). It is reflected: reflection in the y-axis. What are the coordinates of C'?
  18. Triangle ABC has vertices A(7, 8), B(3, −4) and C(−15, 14). It is reflected: reflection in the line y = x. What are the coordinates of C'?
  19. Triangle ABC has vertices A(−11, −8), B(−10, −15) and C(6, 3). It is reflected: reflection in the y-axis. What are the coordinates of A'?
  20. Triangle ABC has vertices A(11, 14), B(−8, 4) and C(−8, 7). It is reflected: reflection in the x-axis. What are the coordinates of A'?
More free practice: fieldbooklearning.com/au/practice/year-8/reflect-a-triangle-in-an-axis-or-the-line-y-x/

Answer key: Reflect a triangle in an axis or the line y = x

  1. (3, 5)
  2. (-4, -3)
  3. (-5, 3)
  4. (-1, -6)
  5. (1, 7)
  6. (-4, -3)
  7. (2, -7)
  8. (2, -6)
  9. (-6, 7)
  10. (-9, 4)
  11. (-5, 2)
  12. (8, 2)
  13. (-5, -9)
  14. (10, -6)
  15. (2, -10)
  16. (-5, -3)
  17. (-4, 9)
  18. (14, -15)
  19. (11, -8)
  20. (11, -14)