Answer:
x=12, DO=45O, G=45, DG=90
Step-by-step explanation:
Mid point means both lenghts are equal
4x-3=2x+21
2x=24
X=12
-----------------
1)4(12)-3=48-3=45
2)2(12)+21=24+21=45
-----------------------------
DO=45
OG=45
DG=90
x = 12
DO = 45
OG = 45
DG = 90
4x-3 = 2x+21
4x-2x = 21+3
2x = 24
x = 24/2
DO = ( 4*12 ) - 3 = 45
OG = (2*12)+21=45
DG = 45+45=90
