congruent
In a parallelogram, opposite angles are equal. Since two angles measure 40 degrees each, the opposite angles are also 40 degrees. Therefore, the measures of the other two angles in the parallelogram are also 40 degrees each.
15
Not necessarily - the diagonals of a rhombus bisect each other (they are perpendicular bisectors of each other), but are not equal.
67.2
They are both equal to each other
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.
A quadrilateral with equal adjacent angles is called a rectangle. In a rectangle, each angle measures 90 degrees, and adjacent angles are equal. This property distinguishes rectangles from other quadrilaterals, such as rhombuses or parallelograms, where angles may not be right angles.
In physics, the main mass measures used are kilograms (kg), grams (g), and milligrams (mg). These measures are related to each other through the metric system, where 1 kilogram is equal to 1000 grams and 1 gram is equal to 1000 milligrams. This means that 1 kilogram is equal to 1,000,000 milligrams.
Equivalent
Segments of equal length are congruent segments. Shapes can also be congruent if their side lengths and angle measures are equal with each other.
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
Vertically Opposite Angles.
The other three sides equal 300 (each). Hope you found this helpful! :)