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1 of 8 0-day streak

Determine whether three sides form a right-angled triangle

DIFFICULTYintrostandardchallengeexam
QUESTION TYPEMix of allChange
Right triangle; longest side thirdNon-right triangle; longest side thirdNOWMix of allRecommended
Question 1 of 8

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A triangle has side A of 80 cm, side B of 18 cm, and side C of 84 cm

Treat the stated side lengths as exact

(a)1 mark

Calculate the sum of the squares of the two shorter side lengths

Format: Exact value
(b)1 mark

Square the longest side

Format: Exact value
(c)1 mark

Decide whether the triangle is right-angled and choose the matching reason