alleryStart learning →An isosceles triangle has equal sides 13 cm and base 10 cm. How long is its altitude to the base?
A8 cm
B10 cm
C11 cm
D12 cm
Answer & Solution
Correct answer: D. 12 cm
The altitude splits the base into 5 cm halves, so it is the square root of 169 minus 25, which is 12 cm.
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