Turn Order & Team Scores
Round 1 of 5
Die 1 • Abscissa (X)
?
Horizontal Axis
Die 2 • Ordinate (Y)
?
Vertical Axis
Initial Point:
Not selected
Image Point:
Not selected
CHANCE CARD #1/24 • REFLECTION
30s
Type 1 of 9 • X-Axis Reflection
Your Marked Initial Point: (0, 0)
Determine the image of your initial point when reflected across the X-axis!
Click the image point on the Cartesian plane, then press "3. Submit Reflection Answer!"
Cartesian Coordinate Plane
Waiting for Spin Order
Cursor:
(0, 0)
Your Initial Point (A)
Your Image Point (A')
Mirror Line / Point
Correct Answer Key
9 Types of Geometric Reflection Formulas for Point A(x, y) (Junior High Curriculum)
1. Across the X-axis:
A(x, y) → A'(x, -y)
2. Across the Y-axis:
A(x, y) → A'(-x, y)
3. Across Origin O(0, 0):
A(x, y) → A'(-x, -y)
4. Across Line y = x:
A(x, y) → A'(y, x)
5. Across Line y = -x:
A(x, y) → A'(-y, -x)
6. Across Vertical Line x = h:
A(x, y) → A'(2h - x, y)
7. Across Horizontal Line y = k:
A(x, y) → A'(x, 2k - y)
8. Across Point P(a, b):
A(x, y) → A'(2a - x, 2b - y)
9. Composite (Double) Reflection:
T₁ followed by T₂ on A(x, y)