In triangle CAT, points DOG......

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Answer:
46 units
Step-by-step explanation:
Each midline is half the length of the parallel side of ΔCAT. This tells us ...
TO = AO = DG = 10
AD = GO = 7
GT = DO = 9
The perimeter of the trapezoid is ...
TA +AD +DG +GT = (TO+OA) +AD +DG +GT
= (10 +10) +7 +10 +9 = 46
The perimeter of the trapezoid is 46 units.