Angle Pairs with Equations
C
A
B
Given: ∆ABC
∡A = 
∡B = 
∡C = 
∡B=2x
x = 
∡C=3x
1
2
Given:  ∡1=5x+10
∡2=x+20
m∡2=
m∡1=
x=
1
4
2
3
Given:  ∡1=x+5
m∡4=
m∡3=
m∡2=
m∡1=
x=
∡2=x+15
1
2
Given:
m∡2=
∡1=5x+35
m∡1=
∡2=x+55
x=
1
4
2
3
m∡2=
x=
m∡1=
m∡3=
m∡4=
Given:
∡1=5x+9
∡3=3x+19
8
5
7
4
6
1
3
2
m∡6=
b
a
m∡1=115
line a ⇈ line b
Given:
Given:  Vertical Angles
∡2=4x+28
m∡1=
∡1=2x+50
m∡2=
x=
m∡D=
 Acute Triangle
Obtuse Triangle
Equilateral Triangle
Right Triangle
Given ∆DEF
x=
∡D=2x+50
∡E=3x+40
∡F=3x+18
m∡E=
m∡F=
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