GCSE Maths Practice: triangles-and-quadrilaterals

Question 3 of 10

This question covers triangle types based on side lengths.

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\( \begin{array}{l}\text{Which type of triangle has exactly two equal sides?}\end{array} \)

Choose one option:

Look for two sides of equal length; that indicates an isosceles triangle.

An isosceles triangle has exactly two sides of equal length and two equal angles opposite those sides. Equilateral triangles have all sides equal, scalene triangles have no equal sides, and right-angled triangles have a 90° angle. Understanding triangle types helps students calculate angles, identify properties, and solve geometric problems. Isosceles triangles often appear in diagrams, proofs, and constructions. Recognizing symmetry and equal sides is essential for calculations involving angles, perimeters, and areas. Practice drawing isosceles triangles, labeling sides and angles, and comparing with other types to reinforce understanding. This knowledge is crucial for GCSE geometry questions and real-world applications in design and engineering.