Construct a Reflection
Discover the construction used to reflect point, A, over line DE.
1. Using the Circle with Center through Point tool, create a circle with Center at Point A
**Make sure the circle crosses the line of reflection DE twice!!!
2. Using the Intersect tool, create a points where the circle intersects the line of reflection.
Point at Intersection 1: ______
Point at Intersection 2: ______
3. Find the Radius of Circle A
Using the Distance or Length tool measure the distance from the center of the circle to any point on the circle.
Radius of Circle A: _______
4.Using the Circle with Center and Radius tool create two circles:
• Create a circle with center at
Point at Intersection 1 (from Step 2)
and radius (from Step 3)
Center: _______ Radius: ________
• Create a circle with center at
Point at Intersection 2 (from Step 2)
and radius (from Step 3.)
Center: _______ Radius: ________
5. Using the Intersect tool, create a point where the two new circles intersect.
How could you check if this point is Point A reflected over Line R?
Write steps to construct a reflection of a point over a line on paper using a compass