MathDB

1

Part of 2016 Novosibirsk Oral Olympiad in Geometry

Problems(1)

AD=? ABCD, <A=<C=120^o, AB=CD=1,CB=4 (2016 Novosibirsk Oral Geo Oly 8-9 p1)

Source:

4/26/2021
In the quadrilateral ABCDABCD, angles BB and CC are equal to 120o120^o, AB=CD=1AB = CD = 1, CB=4CB = 4. Find the length ADAD.
geometryequal angles