直角三角形练习

GeoGebra 命令及参数

1. Polygon(A, B, C) → t1, c_1, a_1, b_1
2. Angle(B, C, A) → α
3. Angle(A, B, C) → β
4. Angle(C, A, B) → γ
5. Midpoint(A, C) → D
6. Midpoint(C, B) → E
7. Midpoint(B, A) → F
8. RandomElement(qn) → q
9. Textfield(emptys) → InputBox1
10. Random(15, 165) → a1
11. Textfield(delta) → InputBox2
12. If(q ≟ 1, Text[ansq1], If[q ≟ 2, Text[ansq2], If[q ≟ 3, Text[ansq3], If[q ≟ 4, Text[ansq4], If[q ≟ 5, Text[ansq5], If[q ≟ 6, Text[ansq6], If[q ≟ 7, Text[ansq7], If[q ≟ 8, Text[ansq8], If[q ≟ 9, Text[ansq9], If[q ≟ 10, Text[ansq10], Text[ansq11]]]]]]]]]]) → answertext
13. Circle(B, .4) → p
14. Center(p) → T
15. Intersect(p, a_1, 1) → U
16. Intersect(p, c_1, 1) → V
17. Midpoint(U, V) → W
18. Circle(A, 0.4) → s
19. Intersect(s, c_1, 1) → Z
20. Intersect(s, b_1, 1) → A_1
21. Midpoint(Z, A_1) → B_1