congruent
15
Not necessarily - the diagonals of a rhombus bisect each other (they are perpendicular bisectors of each other), but are not equal.
67.2
I would call an equation of this type a ratio and proportion.
A pentagon is a 5-sided polygon. A regular pentagon has all sides of equal length and all interior angles are equal, each measures 108°.
They have equal measures.
Coincident is two linear measures resting exactly on top of each other. Coincident roots are roots that are equal to each other.
Segments of equal length are congruent segments. Shapes can also be congruent if their side lengths and angle measures are equal with each other.
Equivalent
No but the equal ratios are called Equivalent Ratios.
An equation
It could be called an equivalence relationship.
The other two angles each measure 90 degrees
The other three sides equal 300 (each). Hope you found this helpful! :)
Vertically Opposite Angles.
The total of the interior angles equal 5040, and each angle measures 168 degrees The total of the exterior angles equal 360, and each angle measures 12 degrees
For everyone to be nice to each other.