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Question
With the help of the information given in the figure, fill in the boxes to find AB and BC .
AB = BC (Given)
∴∠ BAC = ∠ BCA =
∴ AB = BC = × AC
= × `sqrt8`
= × `2sqrt2`
= 2
Solution
AB = BC
∠ BAC = ∠ BCA =45˚
AB = BC = `1/sqrt2 × AC`
= `1/sqrt2 × 8 = 1/sqrt2 × sqrt(4×2)`
= `1/sqrt2 × 2sqrt2`
= 2
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