The opposite sides of a rectangle are parallel.とは 意味・読み方・使い方

The opposite sides of a rectangle are parallel.

The opposite sides of a square are parallel.

The opposite sides of a parallelogram are parallel.

a quadrilateral having only two sides parallel, called trapezoid

a quadrilateral with two parallel sides

A parallelogram is a quadrilateral formed from two sets of parallel lines.

a quadrilateral with no parallel sides

a prism whose bases are parallelograms

a parallelogram with four equal sides

a parallelogram with four right angles

a parallelogram with adjacent sides of unequal lengths

A square is one type of rectangle, and a rectangle is one type of parallelogram.

A square has four sides.

The square on the hypotenuse of a right(‐angled) triangle is equal to the sum of the squares on the other two sides.

ratio of the adjacent to the opposite side of a right-angled triangle

A square has four equal sides.

ratio of the opposite to the adjacent side of a right-angled triangle

a polygon called regular polygon

The three (interior) angles of a triangle add up to [are equal to] two right angles.

a quadrilateral whose opposite sides are both parallel and equal in length

an angle, both of whose lines are above the horizontal

ratio of the adjacent side to the hypotenuse of a right-angled triangle

a square

ratio of the hypotenuse to the adjacent side of a right-angled triangle

the condition of angles being equal

in diagonally opposed quarters of an escutcheon

the side of a right angled triangle opposite the right angle

the shear changed the quadrilateral into a parallelogram

the base of a triangle or parallelogram, called

an angle formed by two straight lines (in the same plane)