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  • Year 9

Geometrical properties: similarity and Pythagoras' theorem

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17/18 lessons available

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    Checking understanding of similarity

    I can enlarge a shape and can state what changes and what is invariant.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Checking understanding of congruence

    I can translate, reflect and rotate a shape.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Similarity in shapes

    I can recognise that similar shapes have sides in proportion to each other but angle sizes are preserved.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Congruence in shapes

    I can recognise that for congruent shapes both side lengths and angle sizes are preserved.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Congruent, similar or neither

    I can differentiate between shapes which are congruent or similar or neither.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Rotational symmetry

    I can recognise rotational symmetry in shapes.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Congruent triangles (SSS)

    I can appreciate and use the criteria by which triangles are congruent (SSS).
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Congruent triangles (SAS)

    I can appreciate and use the criteria by which triangles are congruent (SAS).
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Congruent triangles (ASA and AAS)

    I can appreciate and use the criteria by which triangles are congruent (ASA and AAS).
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Congruent triangles (RHS)

    I can appreciate and use the criteria by which triangles are congruent (RHS).
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Applying the criteria for congruence

    I can identify congruent triangles and prove why they are congruent.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Demonstrating Pythagoras' theorem

    I can appreciate there is a relationship between the lengths of the sides of a right-angled triangle.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Further demonstrating of Pythagoras' theorem

    Coming soon...

    Length of the hypotenuse

    I can use Pythagoras' theorem to find the length of the hypotenuse.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Length of a shorter side

    I can use Pythagoras' theorem to find the length of one of the shorter sides.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Determining which side

    I can identify which side length is missing and use the appropriate form of Pythagoras' theorem to calculate it.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Pythagoras' theorem in context

    I can use and apply Pythagoras' theorem to solve problems in a range of contexts.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

    Problem solving with similarity and Pythagoras' theorem

    I can use my knowledge of similarity and Pythagoras' theorem to solve problems.
    • 1 Slide deck
    • 1 Worksheet
    • 2 Quizzes
    • 1 Video

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