 Bisecting an Arc

Illustration used to show how to bisect a given arc. Equal Tangents to Circle Theorem

Illustration used to show that "If two tangents are drawn from any given point to a circle, those tangents… Tangent to Perpendicular Radius Circle Theorem

Illustration used to show that "A tangent to a circle is perpendicular to the radius drawn to the point… Diameter Perpendicular to a Chord in a Circle

Illustration used to show that "The diameter perpendicular to a chord bisects the chord and also its… Equal Chords in Equal Circles Theorem

Illustration used to show that "In equal circles, or in the same circle, if two chords are equal, they… Equal Chords in Equal Circles Theorem

Illustration used to show that "In equal circles, or in the same circle, if two chords are equal, they… Unequal Chords in Circles Theorem

Illustration used to show that "In equal circles, or in the same circle, if two chords are unequal,… Unequal Chords in Equal Circles Theorem

Illustration used to show that "In equal circles, or in the same circle, if two chords are unequal,… Unequal Chords in Equal Circles Theorem

Illustration used to show that "In equal circles, or in the same circle, if two chords are unequal,… Intersecting Lines Corollary

Illustration used to prove the corollary that "Two lines perpendicular respectively to two intersecting… Perpendicular to Line Corollary

Illustration used to prove the corollary that "From a point outside a line there exists only one perpendicular… Perpendicular To Line In Plane

"If from the foot of a perpendicular to a plane a straight line is drawn at right angles to any line… Plane Perpendicular To Line

"All the perpendiculars to a straight line at the same point lie in a plane perpendicular to the line." Planes Perpendicular To A Line

"Two planes perpendicular to the same straight line are parallel." Parallel Lines

"Two straight lines perpendicular to the same plane are parallel." Parallel Lines

"Two straight lines that are parallel to a third are parallel to each other." Line Perpendicular To Plane

"If a straight line is perpendicular to each of two straight lines at their point of intersection it… Lines Perpendicular To A Plane

"If one of two parallels is perpendicular to a plane, the other is also." Area Of Regular Polygon Proof

An illustration showing that the area of a regular polygon is equal to the area of a triangle whose… 2 Triangles Theorem

Illustration used to prove that "If two triangles have two sides of one equal respectively to two sides… 2 Triangles Theorem

Illustration used to prove that "If two triangles have two sides of one equal respectively to two sides… Exterior Angle of Triangle Theorem

Illustration used to prove that "If one side of a triangle is prolonged, the exterior angle formed is… Parallel Lines Theorem

Illustration used to prove that "If two straight lines are parallel to a third straight line, they are… Sides of Triangle Theorem

Illustration used to prove that "If two sides of a triangle are unequal, the angle opposite the greater… Sides of Triangle Theorem

Illustration used to prove that "The sum of any two sides of a triangle is greater than the third side." Segments Labeled In A Triangle

Illustration of triangle ABC with BE extended through the triangle at point D. Segment AB is equal to…