Question

it two angles are equal and supplementary, the angles are
select one:
a. right angles
b. obtuse angles
c. acute angles

if ab has a midpoint, the ab is
select one:
a. a ray
b. a line
c. a line segment

Explanation:

Step1: Define equal supplementary angles

Let each angle be $x$. Supplementary angles sum to $180^\circ$, so:
$$x + x = 180^\circ$$

Step2: Solve for the angle

Simplify and solve the equation:
$$2x = 180^\circ \implies x = \frac{180^\circ}{2} = 90^\circ$$

Step3: Identify figure with midpoint

A midpoint requires two distinct endpoints; only a line segment has fixed endpoints.

Answer:

1. a. right angles
2. c. a line segment