Which of the following correctly describes a concave polygon?
a.
in a concave polygon, each interior angle is less than 180°.

b.
in a concave polygon, at least one interior angle is greater than 90°.

c.
in a concave polygon, each interior angle is greater than 180°.

d.
in a concave polygon, at least one interior angle is greater than 180°.

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

answer: 12   they all have at least 28 days

step-by-step explanation: haha

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.