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
Each SEAG paper has 28 maths questions. Questions 29 to 50 are multiple choice with five possible answers, and questions 51 to 56 need a short written answer. With 56 questions in 60 minutes across English and maths, that is about a minute per question.
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
Try three free questions from our reflect shapes course. They start easy and get harder, so you can see where your child's confidence runs out. If they manage the last one without a hint, this topic is probably secure. If not, the steps above show where to start.
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?
Cara reflects a triangle in a vertical mirror line at x = 6. One vertex is at (2, 3). What are the coordinates of the reflected vertex?
Kyle draws a right-angled triangle on squared paper with one vertex touching a vertical mirror line. After reflection, how many vertices will the original and reflected triangles share?
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.
Sitting the SEAG test this November? Read our last-month revision plan, Paper 1 vs Paper 2 and test day guide.
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.
Free to start · no card needed