SOLUTION: In a rhombus One angle is given 60° .How can we prove that smaller diagonal of a rhombus is equal to its one of the side

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Question 1081948: In a rhombus One angle is given 60° .How can we prove that smaller diagonal of a rhombus is equal to its one of the side
Answer by ikleyn(52797) About Me  (Show Source):
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Then the adjacent/consecutive angle is 120 degs, and the diagonal bisects it in two angles of 60 degrees each.

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On rhombus and its properties see the lessons
    - Diagonals of a rhombus are perpendicular
    - Diagonals of a rhombus bisect its angles
in this site.

Also,  you have this free of charge online textbook on Geometry
    GEOMETRY - YOUR ONLINE TEXTBOOK
in this site.

The referred lessons are the part if this textbook under the topic "Properties of rhombis".