Two pairs of parallel sides form equal inscribed angles that are bound to subtend equal chords - the third sides.
the main beauty is provided by the bracts which subtend the flowers
In fact Shen demonstrated a remarkable ability to view spatial arrangements and he gave an approximate formula for the length of a circular arc in terms of the chord subtending the arc.
The space between the dot and the first letter of the prime to the right of fixation subtended a visual angle of 21.
These angles are subtended by the same chord, AW.
The most common geometry for curved crystal diffraction is based on the Rowland circle principle, which relies on the well-known property of a circle that an arc segment subtends a constant angle for any point on the circle.
A single flower is borne on a scape arising between the basal leaves and subtended by a large, leaf-like bract.
The bract immediately subtends the sepal, partly enclosing it.
This allowed him to calculate the chord subtended by angles of 36, 72, 60, 90 and 120.
In other words, when two plates subtended the same angle - one big and far away, the other small and nearby - the antennae also made the same angle with each other.