Illustration of line segment AB, which is made up of line segments AC and CB. C is considered the midpoint…

Illustration showing a line with a midpoint drawn from a given exterior point to a given circumference.

Illustration showing a line that moves so that its ends constantly touch two fixed lines which are perpendicular…

Illustration used to prove "The line joining the mid-points of two sides of a triangle is parallel to…

Illustration to show that when lines from two opposite vertices of a parallelogram to the midpoints…

"The locus of a point in space equidistant from the extremities of a straight line is the plane perpendicular…

Quadrilateral with intersecting diagonals and segment connecting midpoints.

Illustrations of a trapezoid with a line joining the midpoints of the diagonals.

Illustration to show that if the lines joining the middle points of the sides of a triangle divide the…

Illustration to show the perpendiculars dropped from the midpoint of the base to the legs of an isosceles…

Illustration of a right triangle with the midpoint of the hypotenuse drawn.

Illustration of an equilateral triangle inscribed in an equilateral triangle. The smaller triangle is…

Illustration of an equilateral triangle inscribed in an equilateral triangle by joining the midpoints…

Illustration of an equilateral triangle inscribed in an equilateral triangle by joining the midpoints…

Illustration of an equilateral triangle inscribed in an equilateral triangle by joining the midpoints…