abcd is a rhombus such that angle <acb =40° find the angle <adb
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Step-by-step explanation:
abcd is the rhombus, given <acb = 40°,
we can get <cad= 40° (alternate angels) due to the property that opposite sides of a rhombus will aways be parallel.
now the diagonals of the rhombus intersect at an angle of 90°. now use this property to get <adb.
90°+<adb+<cad= 180°
=> <adb = (180 - 90 - 40)° = 50°
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