Page 156 - Engineering
P. 156
ﺍﳌﺜﻠﺜﺎﺕ ١٤٣
B
30 y
D 14 E
x 15
A 22 C
) (٢٥ﻛﻢ ﻳﺰﻳﺪ ﳏﻴﻂ اﳌﺜﻠﺚ △ABCﻋﻦ ﳏﻴﻂ اﳌﺜﻠﺚ △DEF؟
D
A
10
8
60° 60° y° y°
B C E4 F
)ب( ) 2ج( ) 4د( 6 )أ( 0
) (٢٦إذا ﻛﺎن ﻃﻮل ارﺗﻔﺎع ﻣﺜﻠﺚ ﻳﻘﻞ ﻋﻦ ﻃﻮل ﻗﺎﻋﺪﺗﻪ ﲟﻘﺪار 5ﺑﻮﺻﺎت وﻛﺎﻧﺖ
ﻣﺴﺎﺣﺘﻪ ﺗﺴﺎوي 52ﺑﻮﺻﺔ ﻣﺮﺑﻌﺔ ﻓﻤﺎ ﻃﻮلﻛﻞ ﻣﻦ ارﺗﻔﺎﻋﻪ وﻗﺎﻋﺪﺗﻪ ؟
)ب( b = 14 ،h = 9 )أ( b = 13 ،h = 8
)د( b = 16 ،h = 11 )ج( b = 15 ،h = 10
) (٢٧إذا ﻛﺎن ﳎﻤﻮع ﻃﻮﱄ ﺿﻠﻌﻲ اﻟﻘﺎﺋﻤﺔ ﰲ ﻣﺜﻠﺚ ﻗﺎﺋﻢ اﻟﺰاوﻳﺔ ﻳﺴﺎوي 49وﻛﺎن
ﻃﻮل اﻟﻮﺗﺮ 41ﻓﻤﺎ ﻃﻮﻻ ﺿﻠﻌﻲ اﻟﻘﺎﺋﻤﺔ ؟
