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Geometry

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Angle Properties (Lines, Triangles, Quadrilaterals)

Subtopic

Angle Properties (Lines, Triangles, Quadrilaterals) under Geometry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A straight line has four equal angles on it. What is the size of each angle?

    A.

    90∘90^{\circ}

    B.

    60∘60^{\circ}

    C.

    45∘45^{\circ}

    D.

    30∘30^{\circ}

  2. 2.

    If an exterior angle of a triangle is 150∘150^{\circ}, what is the size of the interior angle adjacent to it?

    A.

    30∘30^{\circ}

    B.

    150∘150^{\circ}

    C.

    60∘60^{\circ}

    D.

    90∘90^{\circ}

  3. 3.

    Three angles of a quadrilateral are 70∘,70∘70^{\circ}, 70^{\circ} and 110∘110^{\circ}. Find the fourth angle.

    A.

    110∘110^{\circ}

    B.

    70∘70^{\circ}

    C.

    180∘180^{\circ}

    D.

    100∘100^{\circ}

Download the worksheet for Geometry - Angle Properties (Lines, Triangles, Quadrilaterals) to practice offline. It includes additional chapter-level practice questions.

Polygons and Symmetry

Subtopic

Polygons and Symmetry under Geometry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the size of each exterior angle of a regular 15-sided polygon?

    A.

    24∘24^\circ

    B.

    15∘15^\circ

    C.

    30∘30^\circ

    D.

    20∘20^\circ

  2. 2.

    A regular polygon has an exterior angle of 18∘18^\circ. How many sides does it have?

    A.

    18

    B.

    20

    C.

    22

    D.

    24

  3. 3.

    Which of the following is the definition of a regular polygon?

    A.

    A polygon with all sides equal and all interior angles equal

    B.

    A polygon with at least two equal sides

    C.

    A polygon with a total of 360 degrees in exterior angles

    D.

    A polygon with no reflexive angles

Download the worksheet for Geometry - Polygons and Symmetry to practice offline. It includes additional chapter-level practice questions.

Circle Theorems

Subtopic

Circle Theorems under Geometry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In a cyclic quadrilateral WXYZWXYZ, if ∠W=100∘\angle W = 100^\circ and ∠X=70∘\angle X = 70^\circ, what is ∠Z\angle Z?

    A.

    80∘80^\circ

    B.

    100∘100^\circ

    C.

    110∘110^\circ

    D.

    70∘70^\circ

  2. 2.

    A circle has a radius of 1313 cm. A chord is 2424 cm long. How far is the chord from the center?

    A.

    55 cm

    B.

    1111 cm

    C.

    1212 cm

    D.

    11 cm

  3. 3.

    If an exterior angle of a cyclic quadrilateral is 80∘80^\circ, the interior opposite angle is:

    A.

    100∘100^\circ

    B.

    80∘80^\circ

    C.

    10∘10^\circ

    D.

    180∘180^\circ

Download the worksheet for Geometry - Circle Theorems to practice offline. It includes additional chapter-level practice questions.

Congruence and Similarity

Subtopic

Congruence and Similarity under Geometry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If two triangles are similar, the ratio of their corresponding heights is the same as:

    A.

    The ratio of their areas

    B.

    The ratio of their corresponding sides

    C.

    The square of the ratio of their sides

    D.

    The ratio of their volumes

  2. 2.

    Two cubes have side lengths of 2 cm2\text{ cm} and 4 cm4\text{ cm}. What is the ratio of their volumes?

    A.

    1:21:2

    B.

    1:41:4

    C.

    1:81:8

    D.

    1:161:16

  3. 3.

    If △ABC≅△DEF\triangle ABC \cong \triangle DEF, then which of the following must be true?

    A.

    Area of ABC≠ABC \neq Area of DEFDEF

    B.

    Perimeter of ABC=ABC = Perimeter of DEFDEF

    C.

    The triangles have different shapes

    D.

    The triangles are not similar

Download the worksheet for Geometry - Congruence and Similarity to practice offline. It includes additional chapter-level practice questions.

Geometry - IGCSE Grade 9 Maths Notes & Revision | Krit.club