Geometric transformations (rotation) — KCSE Mathematics
KCSE Mathematics · 90 practice questions · 3 syllabus objectives
What You'll Learn
Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.
Rotate a point or shape through a given angle (90°, 180°, 270°) about a given centre of rotation
Determine the centre, angle and direction of rotation given an object and its image
Geometric transformations (rotation)
Sample Questions
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State how to determine the centre of rotation when a quadrilateral PQRS with vertices P(1, 1), Q(3, 1), R(3, 3), and S(1, 3) is rotated to form quadrilateral P'Q'R'S' with vertices P'(1, 3), Q'(3, 3), R'(3, 1), and S'(1, 1). (3 marks)
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State the centre of rotation and the angle of rotation when triangle ABC with vertices A(2, 3), B(4, 5), and C(6, 3) is rotated to form triangle A'B'C' with vertices A'(3, 2), B'(5, 4), and C'(3, 6). (4 marks)
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A point B(3, 4) is rotated about the origin through an angle of +180°. State the coordinates of the image B′. (2 marks)
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Why Practise Geometric transformations (rotation)?
KNEC Aligned
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