Let ABC be a triangle, and DE parallel to the base BC. Suppose point F is any point on DE. Show that shaded area is less than or equal to one-fourth of the area of the entire triangle. Where α(BDF) + α(CEF) = 1 4α(ABC) if and only if points D and E are the midpoints of AB and AC, respectively.
Let ABC be a triangle, and DE parallel to the base BC. Suppose point F is any point on DE. Show that shaded area is less than or equal to one-fourth of the area of the entire triangle. Where α(BDF) + α(CEF) = 1 4α(ABC) if and only if points D and E are the midpoints of AB and AC, respectively.
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter9: Surfaces And Solids
Section9.1: Prisms, Area And Volume
Problem 49E: A diagonal of a cube joins two vertices so that the remaining points of the diagonal lie in the...
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Let ABC be a triangle, and DE parallel to the base BC. Suppose point F is any point on
DE. Show that shaded area is less than or equal to one-fourth
of the area of the entire triangle. Where α(BDF) + α(CEF) = 1
4α(ABC) if and only if
points D and E are the midpoints of AB and AC, respectively.
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