Algebra: simplify expression
Angles (use #2)
Find the Missing Angle
equations
Angles
100
−4 + 7(1 − 3m)
3 - 21m
100
∠ABD
75 DEGREES
100
Write the equation to find x.
x+37=90
100
Solve for x.
3x+7=13
x=2
100
Angle that measures 90 degrees
Right
200
10 − 5(9n − 9)
55 - 45n
200
∠ABE
105 DEGREES
200
Write the equation (don't solve).
28o + xo + 73o = 180o
200
solve for x
x=8
200
Angle that measures 42 degrees
Acute
300
- (5a – 7b + 9)
-5a + 7b - 9
300
∠ACE
60 DEGREES
300
x + 72 + 45= 180
Find the missing angle
63
300
solve for x
3x + 5 = -16
x= -7
300
Angle that measures 91 degrees
Obtuse
400
7x – (4x + 6)
3x - 6
400
∠ACD
30 DEGREES
400
x + 62 = 90 degrees
X = 28
400
solve for x
−8−2m=12
x=-10
400
Angles that measure 45 and 45 added together equal
Right (90 degrees)
500
−7(n + 3) − 8(1 + 8n)
-71n - 29
500
∠AEF
25 DEGREES
500
Right angle + 20 + x = 180
X= 70
500
Solve for x
5 + 14x = 9x - 5
x=-2
500
Angle that measures 180 degrees
Straight