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1) LInear Pair

2) Adjacent (but not a linear pair)

3) Complementary Angles

4) Vertical angles

Step-by-step explanation:

1st pair of angles are linear because they sum to 180 and are on the same line

2nd pair of angles are adjacent but not linear because they're not on a line

3rd pair of angles are complementary because they're neighboring a 90° angle and the three angles share the same line.

4th pair of angles are vertical because they're across from each other.

huh? im pretty sure it is in 199

step-by-step explanation:

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.