Cite
APA Citation
Beardon, A. F. (2017). 101.34 The area of a quadrilateral. Mathematical gazette, 101(552), 492–494. http://access.bl.uk/ark:/81055/vdc_100050610456.0x000035
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Beardon, A. F. (2017). 101.34 The area of a quadrilateral. Mathematical gazette, 101(552), 492–494. http://access.bl.uk/ark:/81055/vdc_100050610456.0x000035