Use less than, equal to, or greater than to complete the statement. the sum of the measures of the exterior angles of a regular 5-gon, one at each vertex, is the sum of the measures of the exterior angles of a regular 9-gon, one at each vertex.
a.
greater than
b.
cannot tell
c.
equal to
d.
less than

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?