Geometry
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Angle Properties of Lines, Triangles, and Polygons
SubtopicAngle Properties of Lines, Triangles, and Polygons under Geometry for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
In the diagram, line is parallel to line . Find the value of .
A.B.C.D. - 2.
Find angle in the diagram showing vertically opposite angles.
A.B.C.D. - 3.
Determine the value of angle on the straight line .
A.B.C.D. - 4.
Find the size of angle in the quadrilateral.
A.B.C.D. - 5.
Lines and are parallel. Transversal intersects them at and . If and , find .
A.B.C.D. - 6.
In triangle , the ratio of angles is . Find the largest angle.
A.B.C.D. - 7.
If the exterior angle of a regular polygon is , how many sides does it have?
A.B.C.D. - 8.
In a star-shaped badge (a pentagram), the five points are vertices of triangles attached to a central regular pentagon. If the pentagon in the center is regular, what is the sum of the five angles at the tips of the star?
A.B.C.D. - 9.
An irregular hexagon has five interior angles that are all equal to . Calculate the size of the sixth interior angle.
A.B.C.D. - 10.
A technician is aligning two laser beams that must be parallel. Beam A and Beam B are crossed by a third calibration beam. The technician measures two consecutive interior angles on the same side of the calibration beam as and . For the beams to be perfectly parallel, what must be the value of ?
A.B.C.D.
Download the worksheet for Geometry - Angle Properties of Lines, Triangles, and Polygons to practice offline. It includes additional chapter-level practice questions.
Symmetry and Transformations (Translation, Rotation, Reflection, Enlargement)
SubtopicSymmetry and Transformations (Translation, Rotation, Reflection, Enlargement) under Geometry for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
A shape is transformed to shape as shown in the coordinate plane. Which vector represents the translation that moves shape to shape ?
A.B.C.D. - 2.
What translation vector moves a point from to ?
A.B.C.D. - 3.
If shape X is rotated 90° anticlockwise about the origin, which quadrant will the image be in?
A.Second Quadrant
B.First Quadrant
C.Third Quadrant
D.Fourth Quadrant
- 4.
Which transformation is shown where the orientation of the shape is reversed?
A.Reflection
B.Translation
C.Rotation
D.Enlargement
- 5.
Shape is mapped to by a rotation of 90° anticlockwise about the origin. Shape is mapped to by a reflection in the x-axis. If has vertex , what is the corresponding vertex in ?
A.B.C.D. - 6.
The point is reflected in the line . What is the image point?
A.B.C.D. - 7.
How many lines of symmetry does the shape formed by the function have (restricted to )?
A.1
B.0
C.2
D.Infinite
- 8.
Point is rotated anti-clockwise about the origin to . What were the original coordinates of point ?
A.B.C.D. - 9.
A rectangle with area is enlarged. The new area is . If the center of enlargement is the origin, what is the scale factor ?
A.B.C.D. - 10.
Triangle has vertices , , and . If it is reflected in the line , which statement correctly describes the resulting image?
A.The image has vertices , , and .
B.The image is identical to the original triangle.
C.The image has vertices , , and .
D.The image is translated units to the left.
Download the worksheet for Geometry - Symmetry and Transformations (Translation, Rotation, Reflection, Enlargement) to practice offline. It includes additional chapter-level practice questions.
Pythagoras' Theorem
SubtopicPythagoras' Theorem under Geometry for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
A right-angled triangle has two shorter sides of lengths cm and cm. Calculate the length of the hypotenuse, denoted by .
A.cm
B.cm
C.cm
D.cm
- 2.
In a right-angled triangle, the legs are m and m. Find the hypotenuse.
A.m
B.m
C.m
D.m
- 3.
A square has a diagonal of length cm. What is the length of one side of the square?
A.cm
B.cm
C.cm
D.cm
- 4.
Find the length of the side labeled in the triangle below.
A.B.C.D. - 5.
In the diagram, is a straight line. Triangle is right-angled at . cm, cm, and cm. Find the length of .
A.cm
B.cm
C.cm
D.cm
- 6.
A rhombus has diagonals of length cm and cm. What is the length of one side of the rhombus?
A.cm
B.cm
C.cm
D.cm
- 7.
Calculate the area of a right-angled triangle with a hypotenuse of cm and one leg of cm.
A.B.C.D. - 8.
A television screen size is given by the length of its diagonal. If a TV screen is inches wide and inches high, what is the advertised size of the TV screen in inches?
A.inches
B.inches
C.inches
D.inches
- 9.
A gardener wants to create a path diagonally across a rectangular garden measuring m by m. If the path costs per meter to build, what is the total cost of the diagonal path?
A.B.C.D. - 10.
Find the value of in the diagram where two right-angled triangles share a common side. The first triangle has legs and . The second triangle has the hypotenuse of the first as one leg and as the other leg. is the hypotenuse of the second triangle.
A.B.C.D.
Download the worksheet for Geometry - Pythagoras' Theorem to practice offline. It includes additional chapter-level practice questions.
Properties of Circles
SubtopicProperties of Circles under Geometry for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
If a circle has an area of cm, what is its circumference?
A.cm
B.cm
C.cm
D.cm
- 2.
In the diagram, if the radius is , which expression represents the area?
A.B.C.D. - 3.
What is the relationship between the radius () and the diameter () of a circle?
A.B.C.D. - 4.
Calculate the area of a circle where the diameter is cm. Leave your answer in terms of .
A.cm
B.cm
C.cm
D.cm
- 5.
What is the area of a circle that has the same numerical value for its circumference and its area?
A.B.C.D. - 6.
Two circles are placed side by side so they touch at one point. If both circles have a radius of cm, what is the length of the rectangle that just encloses them?
A.cm
B.cm
C.cm
D.cm
- 7.
Calculate the area of the shaded region between the square and the inscribed circle. The square has a side of cm. Use .
A.cm
B.cm
C.cm
D.cm
- 8.
A landscape architect is designing a circular flower bed surrounded by a gravel path. The inner flower bed has a radius of meters. The gravel path has a constant width of meters. If the area of the gravel path is exactly twice the area of the inner flower bed, calculate the total radius of the entire structure (flower bed plus path). Give your answer to two decimal places.
A.m
B.m
C.m
D.m
- 9.
The perimeter of a shaded region formed by a large semicircle of diameter and two smaller identical semicircles of diameter placed along the large diameter is required. Calculate the total perimeter of this shaded boundary.
A.B.C.D. - 10.
A circular piece of card has a radius of . A concentric circle of radius is cut out from the center. If the area of the remaining annulus is , find the value of .
A.B.C.D.
Download the worksheet for Geometry - Properties of Circles to practice offline. It includes additional chapter-level practice questions.
Geometrical Constructions and Loci
SubtopicGeometrical Constructions and Loci under Geometry for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
In the construction of a perpendicular from a point to a line , where is not on , what is the first step?
A.Draw a line through at
B.Draw an arc with center that intersects at two points
C.Bisect the line
D.Measure the distance from to with a ruler
- 2.
Which tool is essential for drawing a locus of points at a constant distance from a fixed point?
A.Protractor
B.Set square
C.Compass
D.Ruler only
- 3.
What geometric construction is used to find the center of a circle if you are given three points on its circumference?
A.Angle bisectors of the triangle formed by the points
B.Perpendicular bisectors of the chords between the points
C.Medians of the triangle formed by the points
D.Altitudes of the triangle formed by the points
- 4.
If you bisect a angle, and then bisect one of the resulting angles, what is the size of the smallest angle created?
A.B.C.D. - 5.
In the diagram, a straight line segment is long. A point moves such that it is always equidistant from point and point . Which geometrical construction represents the locus of point ?
A.A circle with center and radius
B.The perpendicular bisector of the line segment
C.A line parallel to at a distance of
D.The angle bisector of a triangle formed by and
- 6.
The locus of points equidistant from two parallel lines and that are apart is:
A.A line perpendicular to
B.A line parallel to and from it
C.A circle with diameter
D.A point halfway between them
- 7.
How many points are both from point and from point , if ?
A.Zero
B.One
C.Two
D.Infinitely many
- 8.
In a square of side length , a locus is formed by all points such that the distance from to is equal to the distance from to . Which geometric feature represents this locus?
A.The perpendicular bisector of .
B.The diagonal .
C.A circle centered at the center of the square.
D.The diagonal .
- 9.
Given a fixed segment , a point moves such that the area of triangle is always . If , what is the locus of ?
A.A circle with diameter .
B.Two lines parallel to , each at a distance of from .
C.A line perpendicular to passing through its midpoint.
D.Two lines parallel to , each at a distance of from .
- 10.
A point moves such that it is always from a line segment which is long. What is the shape of the locus of ?
A.Two parallel lines of length .
B.A rectangle with dimensions .
C.Two parallel line segments of length connected by two semicircles of radius .
D.An ellipse with major axis .
Download the worksheet for Geometry - Geometrical Constructions and Loci to practice offline. It includes additional chapter-level practice questions.