AMC 8 2017 Problem 22

AMC8 2017 年第 22

三角形★★★★
In the right triangle ABC, AC=12, BC=5, and angle C is a right angle. A semicircle is inscribed in the triangle as shown. What is the radius of the semicircle?
在直角三角形 ABC 中,AC=12,BC=5,且角 C 是个直角。一个半圆如下图所示内切于三角形中,那么这个半圆的半径是多少?
AMC 8 2017 Problem 22 figure

正确答案 · Correct Answer

D

解析 · Solution

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