Assertion: octagon's diagonal | /r/HasProperty | equal
Facets:
value: in length
type: OTHER
value: at right angles to each other
type: MANNER
Source sentences:
text: The diagonals of the green quadrilateral are equal in length and at right angles to each other
text: If squares are constructed all internally or all externally on the sides of an octagon, then the midpoints of the segments connecting the centers of opposite squares form a quadrilateral that is both equidiagonal and orthodiagonal (that is, whose diagonals are equal in length and at right angles to each other).:Prop.
text: The diagonals of the green quadrilateral are equal in length and at right angles to each other
text: If squares are constructed all internally or all externally on the sides of an octagon, then the midpoints of the segments connecting the centers of opposite squares form a quadrilateral that is both equidiagonal and orthodiagonal (that is, whose diagonals are equal in length and at right angles to each other).