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The trigonometry arctan() function - inverse tangent - math word definition TAN - Math word definition Graph of the Tangent function - Trigonometry Trigonometry Overview The tangent function in right triangles - Trigonometry The trigonometry arctan() function - inverse tangent - math word definition Calculus - trigonometric Functions How to construct a tangent to a circle at a point How to construct (draw) tangents to a circle through an external point How to construct (draw) the two external tangents to two given circles How to construct (draw) the two internal tangents to two given circles Tangent to an ellipse Parts of a circle - Pictorial index SOHCAHTOA - math word definition - Trigonometry Tangent to a circle definition Tangent Tangent to a circle definition Introduction to the 6 trigonometry functions Graph of the Tangent function - Trigonometry The tangent function in right triangles - Trigonometry Calculus - Taylor series and Polynomials Teaching Notes: Limitations of the applets in the coordinate geometry section Coterminal - math word definition Terminal side definition - Trigonometry Terms of Use Calculus - Alternating Series Test Calculus - Comparison Test Calculus - Integral Test Calculus - Limit Comparison Test Calculus - Ratio Test Quadrilateral (also: tetragon, quadrangle) - math word definition Tetragon - math word definition Platonic solid Biography of Thales - math word definition Thales theorem Central Angle Theorem Calculus - Fundamental Theorem of Calculus Calculus - Second Fundamental Theorem of Calculus Midpoint Theorem (Coordinate Geometry) Biography of Pythagoras - math word definition Pythagorean Theorem - math word definition Biography of Thales - math word definition Thales theorem Triangle exterior angle theorem Triangle inequality theorem- Math Open Reference Triangle inequality theorem converse 24 hour time calculator 24 hour time calculator 24 hour difference between two times calculator Quadratic curve and graph display (standard form)- Math Open Reference Quadratic curve and graph display (vertex form) Calculus - Transformations of Functions Dilation - math word definition Reflection - math word definition Reflection - a mirror image of a line segment Reflection - a mirror image of a point Rotation - math word definition Translation - math word definition How to construct a parallel through a point (translated triangle method) with compass and straightedge or ruler Translation - math word definition Exterior Angles of a Transversal definition Interior Angles of a transversal definition Transversal - math word definition Calculus - Midpoint and Trapezoidal Riemann Sums Trapezoid area and perimeter. (Coordinate Geometry) Trapezoid and its properties. (Coordinate Geometry) Trapezoid - math word definition Area of a trapezoid. Definition, formula and calculator Derivation of the formula for the area of a trapezoid Trapezoid median (midline, midsegment) definition Perimeter of a trapezoid Acute triangle definition Base - Math word definition Points of concurrency AAA Doesn't work AAS Congruent Triangles ASA Congruent Triangles HL Congruent Triangles SAS Congruent Triangles SSA doesn't work SSS Congruent Triangles Congruent Triangles Congruent triangles with a common side Reflected Congruent Triangles Rotated Congruent Triangles How to construct a 30-60-90 triangle with compass and straightedge or ruler How to construct (draw) one of the three altitudes of a triangle How to construct (draw) one of the three altitudes of an obtuse triangle How to construct the centroid of a triangle with compass and straightedge or ruler How to construct circumcenter of a triangle with compass and straightedge or ruler How to construct a circle through the 3 vertices of a triangle with compass and straightedge or ruler Copying a triangle with compass and straightedge or ruler How to construct (draw) an equilateral triangle with compass and straightedge or ruler How to construct the incenter of a triangle with compass and straightedge How to construct (draw) the incircle of a triangle with compass and straightedge or ruler How to construct an equilateral triangle inscribed in a given circle with compass and straightedge or ruler How to construct an isosceles triangle given base and one side How to construct (draw) an isosceles triangle given base and altitude with compass and straightedge or ruler Construct an isosceles triangle with given leg and apex angle with compass and straightedge or ruler How to construct (draw) the medians of a triangle How to construct midsegment of a triangle with compass and straightedge or ruler How to construct (draw) the orthocenter of a triangle- Math Open Reference Pythagorean Theorem Proof How to construct a triangle given two angles and a non-included side (AAS) Triangle given two angles and the included side (ASA) How to construct (draw) a right triangle with a given one angle and hypotenuse (HA) How to construct (draw) a right triangle with a given leg and hypotenuse (HL) How to construct (draw) a right triangle with a given one angle and one leg (LA) How to construct (draw) a right triangle with two given leg lengths (LL) How to construct a triangle given two sides and the included angle (SAS) How to construct (draw) a triangle given three sides (SSS) Coordinates of a triangle centroid with calculator (Coordinate Geometry) Incenter coordinates of a triangle with calculator (Coordinate Geometry) Area of a triangle (Coordinate Geometry) Area of a triangle using the box method (Coordinate Geometry) Equiangular - math word definition Equilateral - math word definition Euler line Area of a triangle given three sides - Heron's Formula with calculator Hypotenuse - math word definition Isosceles triangle - math word definition The Law of Cosines The Law of Sines Obtuse triangle definition Triangles of a Polygon Volume of a triangular prism Pythagorean Theorem - math word definition Pythagorean triples triangle definition Triangle Quiz 1 Right triangle definition Scalene triangle - math word definition AAA Triangle similarity test SAS Triangle similarity test SSS Triangle similarity test Similar Triangles Triangle similarity, ratios of area Triangle similarity, ratios of parts Triangle definition and properties 30-60-90 triangle definition 3:4:5 triangle definition 45-45-90 triangle definition Altitude of a triangle Area of a triangle (conventional method) with calculator Relationship of area and perimeter of a triangle Area of a triangle (Side-angle-side method) with calculator Triangle Centers Overview Triangle centroid definition Triangle Circumcenter definition Circumcircle of a Triangle Classification of triangles Area of an equilateral triangle Triangle exterior angles definition Triangle exterior angle theorem Triangle incenter, description and properties Triangle incircle definition Triangle inequality theorem- Math Open Reference Triangle inequality theorem converse Triangle interior angles definition Median of a triangle - math word definition Triangle midsegment - math word definition Orthocenter of a triangle - math word definition Perimeter of a triangle Relationship of side lengths and angles of a triangle Solving Triangles Trigonometry introduction - math word definition Solving Triangles using Trigonometry The trigonometry arccos() function - inverse cosine - math word definition The trigonometry arcsin() function - inverse sine - math word definition The trigonometry arctan() function - inverse tangent - math word definition Calculus - Derivative at a Point Calculus - Table view of the Derivative Calculus - trigonometric Functions Distance from a point to a line using trigonometry Cosine - math word definition Coterminal - math word definition Reference angle The sine function - math word definition SOHCAHTOA - math word definition - Trigonometry Angle definition and properties (Trigonometry) Trigonometry function with large and negative angles Introduction to the 6 trigonometry functions Graph of the Cosine function - Trigonometry Graph of the Sine function - Trigonometry Graph of the Tangent function - Trigonometry Trigonometry identities Initial side - math word definition - Trigonometry Trigonometry introduction - math word definition The inverse trigonometry functions Trigonometry definition Trigonometry problems - Slant distance Trigonometry problems - Slope angle Quadrantal angle - math word definition - Trigonometry Secant function (sec) - Trigonometry Solving Triangles using Trigonometry Standard position of an angle definition - Trigonometry Trigonometry Overview The tangent function in right triangles - Trigonometry Terminal side definition - Trigonometry Pythagorean triples triangle definition