People only just realising what triangle symbol on clothes label means
The white triangle on clothing labels can appear in four forms ... only to discover your favourite wool jumper has lost its ...
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Pythagoras' theorem in 3 dimensions - Higher
The shape ABCDEFGH is a cuboid. Length AB is 6 cm, length BG is 3 cm and length FG is 2 cm. Calculate the length AF. Draw the right-angled triangle ACF and label the ...