Mathematics 0580 · IGCSE
Pythagoras' theorem
31 practice questions on Pythagoras' theorem, with worked solutions and instant marking.
A right-angled triangle $ABC$ is drawn. $AB=1.6$ m and $BC=2.8$ m.
Feb/March 2018
A right-angled triangle is shown in the diagram. It has a side of 8.5 cm, a base of 10.8 cm, and the figure is marked NOT TO SCALE.
Feb/March 2020
The diagram represents a right-angled triangle. Its vertical side measures 8.5 cm and its base measures 10.8 cm. NOT TO SCALE.
Feb/March 2020
The figure shows two right-angled triangles, $ABC$ and $ACD$. For triangle $ABC$, $AB=39\text{ cm}$ and $BC=52\text{ cm}$. For triangle $ACD$, $CD=25\text{ cm}$. The side $AD$ is marked as $x$ cm. The figure is not drawn to scale.
Feb/March 2023
Find what $x$ is.
May/June 2015
Write the mathematical name beneath each triangle shown.
May/June 2015
The diagram depicts a rectangular field, $ABCD$, together with a straight path, $BD$. Here $BD = 93.5\text{ m}$ and $BC = 82.5\text{ m}$.
May/June 2016
The figure depicts a rectangular playground $ABCD$ (NOT TO SCALE). $AB = 23.4\text{ m}$ and $AC = 35.1\text{ m}$.
May/June 2018
A right-angled triangle $ABC$ is displayed. $AB = 2.5\text{ cm}$ and $BC = 4.1\text{ cm}$. The right angle lies at $B$. The diagram is labelled NOT TO SCALE.
May/June 2018
The diagram shows a triangle with two equal sides of $5\,\text{cm}$, a base measuring $4\,\text{cm}$, and a perpendicular height $h$ dropped from the top vertex to the base.
May/June 2022
Calculate the length of $AB$.
May/June 2023
A right-angled triangle ABC and a semicircle are shown. The semicircle has radius $4.5$ cm. Also, $AC = 8.9$ cm and $BC = 13.2$ cm.
May/June 2023
Calculate the length of $AB$.
May/June 2023
Calculate $AB$.
May/June 2024
In the diagram, triangle $ABC$ is right-angled. $AB = 52.5\text{ cm}$ and $AC = 59.5\text{ cm}$. The right angle is at $B$. The figure is marked NOT TO SCALE.
May/June 2025
A right‑angled triangle is shown. One side measures 35 cm and another side measures 22 cm. The hypotenuse has been marked as $h$ cm. The diagram is marked NOT TO SCALE.
May/June 2025
A right-angled triangle is drawn with one side $5\text{ cm}$, the hypotenuse measures $8\text{ cm}$ and the base is $x\text{ cm}$. The diagram is marked NOT TO SCALE.
Oct/Nov 2015
A right-angled triangle is drawn. One side measures 18 cm, the base measures 26 cm, and the hypotenuse is marked $x$ cm. The diagram is labelled NOT TO SCALE.
Oct/Nov 2015
A right-angled triangle is drawn here, and it is not to scale. One vertical side measures $5\text{ cm}$, the hypotenuse measures $8\text{ cm}$, and the base is labelled $x\text{ cm}$.
Oct/Nov 2015
The figure depicts a right-angled triangle $ABC$, with $AB = 8$ cm, $AC = 18$ cm, and the right angle at $B$.
Oct/Nov 2017
The figure is a right-angled triangle. Its vertical side measures 3.9 cm, the hypotenuse measures 8.5 cm, and the base is marked $x$ cm. The figure is not drawn to scale.
Oct/Nov 2019
The diagram depicts a right-angled triangle. The horizontal side measures 31 cm, the vertical side measures 28 cm, and the hypotenuse is $x$ cm.
Oct/Nov 2019
One side of a rectangle has length 12 cm, and its diagonal has length 13 cm.
Oct/Nov 2020
Calculate the value of $PQ$.
Oct/Nov 2020
One side of a rectangle measures 12 cm. Its diagonal measures 13 cm.
Oct/Nov 2020
Triangle $ABC$ is illustrated. The length of $AB$ is $6\text{ cm}$. From $C$, a perpendicular is drawn to the line containing $AB$ and meets it at right angles, with the height labelled $h\text{ cm}$. The diagram is not drawn to scale.
Oct/Nov 2020
A right-angled triangle is illustrated. The hypotenuse measures $14\text{ cm}$, the base is $10\text{ cm}$ and the perpendicular side is $h\text{ cm}$. NOT TO SCALE.
Oct/Nov 2022
A right-angled triangle is drawn in the diagram. Its base measures 10 cm, the hypotenuse measures 14 cm, and the vertical side is marked $h$ cm. The figure is labelled NOT TO SCALE.
Oct/Nov 2022
Calculate the area enclosed by triangle $ABC$.
Oct/Nov 2023
Find the height of the triangle.
Oct/Nov 2025
The diagram depicts a box shaped as a cuboid with side lengths 5 cm, 5 cm and 7 cm. Mala has a straight rod measuring 10 cm.
Oct/Nov 2025