有圖,試著描述看看
三角形RPT,P是直角
線RP上有一點Q,線RT上有一點S,線PT上有一點U
連接線QS、US
角QSU為 x度
In the figure shown, what is the value of x ?
(1) The length of line segment QR is equal to the length of line segment RS.
(2) The length of line segment ST is equal to the length of line segment TU.
PP的答案是C
我選E,能夠理解data 1&2 合併的話,x 應該是固定的值
但若題目問的是"what is the value of x",x 的值如何求呢?