Which of the following is true for two vertical angles ABC and _DBE? OA) ZABC + m_DBE = 90°
B) m_ABC = m_DBE
C)
m ABC + m_DBE = 180°
D) m ABC = * * M_DBE

The circumference of a circle is 5 pi cm. what is the area of the circle?

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.