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    NationalMediumGeometry7–9

    An isosceles triangle has two equal sides of 1010 cm and a base of 1212 cm. What is the height?

    Um triângulo isósceles tem dois lados iguais de 1010 cm e base de 1212 cm. Qual é a altura?

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    Solution

    Half base =6= 6. Height =102−62=100−36=64=8= \sqrt{10^{2} - 6^{2}} = \sqrt{100 - 36} = \sqrt{64} = 8 cm