The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores the relationship between sides and angles in right-angled triangles. The hypotenuse is the ...
The triangles on one side are numbered 1 ... bending the paper along the line between them, and push in the opposite vertex; the figure may then open up to face 3 or 5. By random flexing you ...
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