Reflecting shapes in horizontal and vertical mirror lines, including on coordinate grids.
Where your child meets this in real life: Understanding reflections in mirrors, symmetrical designs, or folding paper
SEAGReady breaks reflect shapes into 2 steps, taught in order so each skill builds on the last.
Reflect shapes in horizontal and vertical mirror lines on squared paper by counting squares
Reflect shapes in horizontal or vertical mirror lines on coordinate grids, stating the coordinates of reflected vertices
Three free sample questions from our reflect shapes course. Every question comes with a full explanation, and hints that guide without giving the answer away.
Alice is drawing a symmetrical butterfly on squared paper. Point P on the left wing is 4 squares away from the vertical mirror line. How far from the mirror line should point P be on the right wing?
Point A is at (3, 5) on a coordinate grid. It is reflected in a vertical mirror line at x = 5. Point A is 2 units from the line. What are the coordinates of the reflected point A'?
Ryan is reflecting a shape in a vertical mirror line on squared paper. Point X is 2 squares to the left of the mirror line. Where will the reflected point X' be?
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
Point A is marked 3 squares to the left of a vertical mirror line on squared paper.
Where should the reflected point A' be placed?
Count squares from point A to the mirror line
Step 1 of 4
Point A is marked 3 squares to the left of a vertical mirror line on squared paper.
Where should the reflected point A' be placed?
Point A on the right wing is 3 squares from the mirror line, on the opposite side.
The key insight: In a reflection, every point stays the SAME distance from the mirror line - just on the opposite side!
Common mix-up: Placing the reflected point 6 squares from the original. The distance is measured from the mirror LINE, not from the original point. Count to the line, then count the same again on the other side.
These are the misconceptions we see most often in reflect shapes, including the ones our practice questions are specifically designed to catch.
Struggling with reflect shapes? The real gap is often in one of these earlier topics.
SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.
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