解答

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此三角形非等腰

Call me Bravo

If x is 2 let A is 90 degree, but the 223 will be a big problem.

r

請問為什麼這個三角形不能是等腰三角形呢?
x=2的話,角A為什麼會是90度?
要怎麼判斷…@@

Call me Bravo

you write angle C = angle B and angle A = 2 angle C then total 4 angles C = 180 degrees, so angle A is 90 degrees. It's trouble for 223 edges.

r

懂了!3Q~~

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