- A8 cm
- B5 cm
- C13 cm
- D3 cm
Step-by-Step Solution
The incircle touches BC at its midpoint, so the tangents from B and C are 5 cm each. Tangent from A = 13 − 5 = 8 cm. (Check: s − BC = 18 − 10 = 8.)
Answer: A) 8 cm
An isosceles triangle ABC with AB = AC = 13 cm and BC = 10 cm has an incircle. What is the length of the tangent from A to the incircle?
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