a. AS is median
so AS = 1/2 (KL+RE)
AS = x, KL = 9, RE = 14
--> x = 1/2 (9+14) = 11.5
b. x+7 = 1/2 (18+22) --> x+7=20, x = 13
c. AS = x+7 = 20
d. lack of condition
2.
a. RD = 12, DE = RD = 12
b. BR = 10, BE = BR = 10
c. BE = 11 cm, DR = 16 cm
BE = BR = 11 cm, DR = DE = 16 cm
Perimeter = BE +BR + DR + DE
= 11 + 11 + 16 + 16
= 54 cm
d. RD = DE
2x-9 = 3x-16
-9+16 = 3x-2x
x = 7 cm
e. Assume the one is x cm so other is 3x
1/2 (3x*x) = 32
3x^2 = 64
x^2 = 64/3
x = 4.6 cm - shorter diagonal
ty.
