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GEO: 4-8 QC (Isosceles and Equilateral Triangles)
供稿人: Maynard
(原作者: Dilaura)
1. Given ∆ABC, find the value of x andthe length of sideAC.
x = 
AC = 
A
2x + 7
4x - 3
B
3x - 5
C
m∡A=
A
C
2. Find the measure of ∡A & ∡B.
degrees
D
24o
m∡B=
76o
B
E
degrees
3. Find the measure ∡A & the value of x.
m∡A=
x =
B
degrees
C
A
(7x - 3)o
4. Find the measure ∡B, the value of x, and
    the length of CA.
m∡B=
CA =
x =
(½x + 6)
B
(2x)
C
(2x)
A
5. Given ∆ABC, find the     value of x and    the measure of angle B.
m∡B = 
x = 
A
(3x + 4)o
degrees
B
(6x - 20)o
2x - 3
C
6. Find the missing angle measures for ∡1 & ∡2.
m∡1 =
m∡2 =
37o
o
o
1
77o
2
7. Find the measure ∡B, the value of x, and
    the length of BA.
4.8
m∡B=
BA =
x =
o
(3x + 3)
B
C
(5x -17)
A
A
8. Find the measure of angle E.
B
m∡E = 
C
degrees
D
E
9. Given the two triangles find     the measure of ∡B.
48o
m∡B = 
degrees
10. The perimeter of the equilateral ∆FGH = 27 in.       Find the value of x. 
x = 
2x + 1
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