asked 98.1k views
4 votes
HELP PLSSSSS Triangle ABC is an equilateral triangle. The angle bisectors and the perpendicular bisectors meet at D in such a way that CD = 2DE.

The radius of the inscribed circle is____
units, and the radius of the circumscribed circle is___
units.

HELP PLSSSSS Triangle ABC is an equilateral triangle. The angle bisectors and the-example-1
asked
User Jenyffer
by
8.0k points

2 Answers

2 votes
CE = CD + DE = 2DE + DE = 3DE = 8.7

DE = 8.7/3 = 2.9
CD = 2DE = 5.8

For the inscribed circle, where center is point D. The radius is length DE.
This is because the circle will touch the 3 points where the bisectors intersect with sides of triangle.
radius = 2.9

For circumscribed circle, the center will also be point D. The radius is CD.
The circle will touch 3 points of triangle, A,B,C.
radius = 5.8
3 votes

Answer: For clarification, the answer is 2.9 for the first one and the second is 5.8

Step-by-step explanation: They are correct for PLATO users I got them right.

answered
User OzBarry
by
7.6k points
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