A problem by Harley Guo

Level 1

Angle A=60degrees. BC=6. Solve for DE


The answer is 3.

Harley Guo by Harley Guo , 20, China

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3 solutions

Harley Guo
Mar 9, 2015

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Why is ADE similar to ABC?

Sissi Jian - 5 years, 10 months ago
Lance Fernando
Jul 31, 2015

Recall that the median of a triangle is always half of the length in the base. In this case, BC is 6, right? So BC divided by 2 is 3.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Yeabkalu Assefa
May 28, 2015

BD bisects AC , CE bisects AB and we know that AE is half of AC then AB is congruent with AC the triangle ADE is equilateral as well as triangle ABC since all angle measure 60 degrees then from the first two sentences AE=AD=ED=3cm

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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