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3077.1. Diameter, which is perpendicular to chord, properties.

Calculate the perimeter of a triangle DBC, if it is known, that OK is 10cm and the angle B is equal with angle C! Round the result to a whole number.


Write the correct answer!

cm
Grade:
8
Subject
Geometry
Theme
Circle, center angle and indrawn angle.
Subtheme
Diameter, which is perpendicular to chord, properties.

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