Answer:
x = 51°
Step-by-step explanation:
The angle I shaded in yellow is a flat angle which measures 180°.
Use the 129° to find x.
180° - 129° = 51°
Answer:
21 + 5 is the the same thing.
Step-by-step explanation:
Answer:
-3
Step-by-step explanation:
r u serious?
<span>
(9sqrt(5) - (sqrt(4)sqrt(6)) + sqrt(7))
(9sqrt(5) - 2sqrt(6) + sqrt(7))
in decimal form: 17.871!</span>
m<1 + m<2 = 180°
m<3 + m<4 = 180°
Because they are both equal to 180°, you can set them equal to each other.
m<1 + m<2 = m<3 + m<4
Angles 1 and 4 are congruent (equal), so we can subtract them from each side to get:
m<2 = m<3