Angles.Triangles and polygons,
2012-08-09 11:39 pm
Angles.Triangles and polygons,
圖片參考：http://imgcld.yimg.com/8/n/HA00101881/o/701208090058513873413980.jpg
回答 (1)
2012-08-10 12:03 am
✔ 最佳答案
4.x = ∠EHD (alt.∠s, AB//CD)
x = 86°
5.
y + ∠EHD = 180° (int.∠s,AB//CD)
y = 94°
6.
z = ∠EHD (corr.∠s, AB//CD)
z = 86°
7.
The sum of all interior angles of a pentagon
= (5 - 2) x 180° (5 sides in a polygon)
= 540°
參考: andrew
收錄日期: 2021-04-13 18:54:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120809000051KK00585