Remarkable / Worksheets / Grade 7 Maths / Transformation geometry
A one-page CAPS Grade 7 Maths poster on transformation geometry (Shapes and space), with the key ideas, key words and a tip to remember.
Every point slides the same distance in the same direction. The shape does not turn or flip.
A shape slides 4 right and 2 up.
The point (1; 1) moves to (1 + 4; 1 + 2) = (5; 3)
The shape is flipped over a mirror line. Each point and its image are the same distance from the line.
The point (2; 3) in the line x = 5
Distance to the line: 5 − 2 = 3
Image: (5 + 3; 3) = (8; 3)
The shape turns about a fixed point, the centre of rotation. Say the angle and the direction.
An arrow points up.
Turn 90° clockwise: it points right.
Turn 180°: it points down.
Every length is multiplied by the scale factor. The angles stay the same.
A side is 8 cm. Scale factor 5.
8 × 5 = 40 cm