ABCD = rhombus AB = BC = CD = AD angle BAD = 140 degrees angle ABD =?
| May 3, 2021 | education
The sum of the adjacent angles of the rhombus is 180, then the angle ABC = 180 – BAD = 180 – 140 = 40.
The diagonals of the rhombus are the bisectors of the angles at the vertices of the rhombus, therefore, they are divided in half, the angle ABD = ABC / 2 = 40/2 = 20.
Answer: Angle ABD is 20.
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