Parallel never cross
perpendicular is a 90 degree angle
its neither if its not 90 degree or never crossing
Uhm *cough*
you see
it's
a
a
.....
how is this math related?
X² - 169 = 0
x = ?
<span> Add 169 to both sides.
</span>
x² <span>− 169 + 169 </span>= <span>0 + 169</span>x² = 169
Square root
x = <span>± <span>√<span>169
</span></span></span>
<span><span>x = <span><span>13<span> or </span></span>x </span></span>= <span>−13
x can be 13 or -13.</span></span>
Answer:
129 degrees
Step-by-step explanation:
The sum of all the angle of a quadrilateral is always 360 degrees, 51+90+90+129=360
