Find the missing side in each triangle using any method. Check your answers using a
different method.
y
12
3
9
x is
units and y is
units

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's

Answer d; a supplementary angle = 180°, so if that angle = 150°, y would = 30°.

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