GCSE Maths Practice: triangles-and-quadrilaterals

Question 8 of 10

This question focuses on the right angle in a right-angled triangle.

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\( \begin{array}{l}\text{What is the size of the right angle in a right-angled triangle?}\end{array} \)

Choose one option:

Look for the L-shaped corner; that is the right angle.

Right-angled triangles have one angle measuring exactly 90°. The other two angles are acute and sum to 90°. Recognizing the right angle is crucial for applying the Pythagoras’ theorem, calculating side lengths, and solving problems involving trigonometry. Right-angled triangles appear frequently in diagrams, architecture, construction, and design problems. Practicing identification and measurement of the right angle helps students solve geometric proofs, construction exercises, and real-life applications. Understanding right angles in triangles also aids in calculating missing angles and sides, applying angle sum rules, and preparing for GCSE exam questions. Drawing and labeling right-angled triangles reinforces spatial reasoning and accuracy.