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On the side AB of triangle ABC a point D is chosen with… | StemPy Lab
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On the side AB of triangle ABC a point D is chosen with AD : DB = 1 : 3. A point E on AC has DE ∥ BC. A point F on AB has EF ∥ CD. If AB = 16 cm, how long is AF?
Mathematics
Medium
High School (9–10)
General
Geometry › Triangles
SAT
Created by
StemPy Lab
On the side
A
B
AB
A
B
of triangle
A
B
C
ABC
A
B
C
a point
D
D
D
is chosen with
A
D
:
D
B
=
1
:
3
AD : DB = 1 : 3
A
D
:
D
B
=
1
:
3
. A point
E
E
E
on
A
C
AC
A
C
has
D
E
∥
B
C
DE \parallel BC
D
E
∥
B
C
. A point
F
F
F
on
A
B
AB
A
B
has
E
F
∥
C
D
EF \parallel CD
E
F
∥
C
D
. If
A
B
=
16
AB = 16
A
B
=
16
cm, how long is
A
F
AF
A
F
?
4
4
4
cm
3
3
3
cm
2
2
2
cm
1
1
1
cm
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← The sides of a triangle are x cm, (x + 6) cm and 20 cm, where x is a whole number. What is the smallest value of x for which the triangle exists?
A line through D on AB parallel to BC meets AC at E. A line through E parallel to DC meets AB at F. AF = 4 cm and AB = 25 cm. Find AD. →
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