Page 59 - Engineering
P. 59
ﺍﳍﻨﺪﺳﺔ )ﺍﳉﺰء ﺍﻷﻭﻝ( ٤٦
) (٢٥ﻣﺎ ﻗﻴﺎس اﻟﺰاوﻳﺔ xɵﰲ اﻟﺸﻜﻞ اﳌﺮﻓﻖ ؟
)د( 110° )ج( 80° )ب( 50° )أ( 30°
100° 150°
x°
) (٢٦ﻣﺎ ﻗﻴﺎس اﻟﺰاوﻳﺔ ɵyﰲ اﻟﺸﻜﻞ اﳌﺮﻓﻖ ؟
)د( 80° )ج( 75° )ب( 70° )أ( 50°
40°
150°
y°
)ب( ɵy = 120° B ) (٢٧ﰲ اﻟﺸﻜﻞ اﳌﺮﻓﻖ:
)د( ɵy + ɵz = 80° 60° )أ( xɵ = 120°
)ج( AD BC
A x° y° C
120° F
D z°
E
