180-129= 51
angle 4 is equal to angle 12 so missing angle 12= 51°
<span> the angle that the Main Angle is called reference angle
</span><span>Given angle - 180
</span><span> 225° -180
</span>=45
eference angle for 225° is 45
Answer: <span>Postulate 4: If two points lie in a plane, the line containing them lies in that plane.
</span>That is because two points, call them A and B, always form a line, and so, given that they form the line AB and they are in the plane Q, the line AB is in the plane Q.<span />
I’ve attached my work...
Hope it helps!
Math-way app for problems like number 2
Have a nice day:)
