## The area of triangle

In triangle ABC, AD = DB , DE is parallel to BC, and the area of triangle ABC is 40. What is the area of triangle ADE?

In triangle ABC, AD = DB , DE is parallel to BC, and the area of triangle ABC is 40. What is the area of triangle ADE?

An obtuse angle of a rhombus is greater than twice the acute angle by 60°. Find the measure of each angle.

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