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ﺍﳍﻨﺪﺳﺔ )ﺍﳉﺰء ﺍﻷﻭﻝ( ١٥٢
)د( 2 )ج( 3 )ب( 3 2)أ( 2
24
) [Euclid 2010] (٥٠ﻣﺎ ﻃﻮل AHﰲ اﻟﺸﻜﻞ اﳌﺒﲔ أدﻧﺎﻩ ؟
FE
D
G
H 30° 30° C
30° 30° B
)د( 82 30° 30°
27 A1
)ج( 71 )ب( 64 )أ( 32
27 27 27
) (٥١ﰲ اﻟﺸﻜﻞ اﳌﺮﻓﻖ .AB = AC ،ﻣﺎ ﻗﻴﺎس اﻟﺰاوﻳﺔ ɵx؟
A
BC
60° 80° x°
D E F
)د( 35° )ج( 30° )ب( 20° )أ( 10°
) (٥٢ﰲ اﻟﺸﻜﻞ اﳌﺮﻓﻖ BD .ABC = 40° ،BCA = 120° ،ﻣﻨﺼﻒ ،ABC
.CD = 10 ،CE ⊥ ABﻣﺎ ﻃﻮل DG؟
)د( 12 )ج( 10 )ب( 7 )أ( 5