Exam-Style Question on Shape
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 449. This question is similar to one that appeared on a GCSE Higher paper in 2017. The use of a calculator is allowed.
The design below is made from six congruent trapezia and two red triangles.
Each trapezium has one line of symmetry.
The following statements were made about the red triangles:
(a) Which statements must be true?
(b) Which statements could be true?
(c) Which statements must be false?
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