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konstantin123 [22]
4 years ago
11

PLEASE HELP I NEED TO PASS THIS TEST 

Mathematics
1 answer:
HACTEHA [7]4 years ago
4 0
This is an isosceles right triangle (AB = BC & ∠ B=90° - Given)
Then the angles at the base are equal and ∠ CAB = ∠ ACB = 45°

Theorem: Segment DE, joining the midpoints of 2 sides is:
                 1st) parallel to the 3rd side and
                 2nd) equal to half the measurement of the 3rd side
So if the 3rd side (hypotenuse) = 9 units, DE = 9/2 = 4.5 units
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