Which of the following statements is not always true?

a.
in a rhombus, all four sides are congruent.
b.
in a rhombus, all four angles are congruent.
c.
in a rhombus, the diagonals are perpendicular.
d.
in a rhombus, the diagonals bisect opposite angles.

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

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.

Describe the relationship between the angles of similar triangles and the sides of similar triangles