Math - Geometry

• 3D Coordinates (In Space)
• Angles
• Arcs
• Area Formulas
• Classifying Triangles
• Compass/Protractor Constructions
• Congruent Triangles
• Deductive Reasoning
• Dilations
• Geometric Mean
• Geometric Probability
• Graphing Linear Equations
• Inscribed Angles
• Intro to Trigonometry
• Line
• Loci and Transformations
• Mappings (Tessellations)
• Networks
• Pairs of Angles
• Parallels
• Parallels and Transversals
• Parts of Circles
• Planes
• Points
• Polygon Angles
• Polygon Parts
• Polygons and Polyhedra
• Prisms
• Proofs
• Pyramids and Cones
• Quadrilaterals
• Rays/Angles
• Reflections
• Right Triangles
• Rotations
• Segments
• Similar Polygons
• Similar Triangles
• Space
• Statements
• Surface Area Formulas
• Tangents
• Translations
• Triangle Centers
• Triangle Inequality
• Triangle Parts
• Triangle Segments
• Vectors
• Volume Formulas

Similar Triangles

Similar Triangles Theorems that prove triangles are similar Angles, Sides & similarity ratio math warehouse

Definition of Similar Polygons This site shows the definition of similar polygons with the relationship of corresponding angles and how corresponsing sides are in proportion. Math Open Reference

Early Edge: Triangles: Perimeter and Area In this Early Edge video lesson, you'll learn more about Triangles: Perimeter and Area, so you can be successful when you take on high-school Math & Geometry. The Princeton Review

Early Edge: Complementary and Supplementary Angles In this Early Edge video lesson, you'll learn more about Complementary and Supplementary Angles, so you can be successful when you take on high-school Math & Geometry. The Princeton Review

Early Edge: Equilateral, Isoceles and Scalene Triangles In this Early Edge video lesson, you'll learn more about Equilateral, Isoceles and Scalene Triangles, so you can be successful when you take on high-school Math & Geometry. The Princeton Review

Early Edge: Triangles In this Early Edge video lesson, you'll learn more about Triangles, so you can be successful when you take on high-school Math & Geometry. The Princeton Review

Early Edge: Types of Angles In this Early Edge video lesson, you'll learn more about Types of Angles, so you can be successful when you take on high-school Math & Geometry. The Princeton Review

Area and Similar Triangles Discusses ratios of similar triangles Math Warehouse

Similar Triangles Introduction Very basic intro to similar triangles including a definition of similar triangles GCSE - General Certificate of Secondary Education

Triangle similarity, ratios of parts Similar triangles - sides, medians, perimeters, altitudes all in same proportion. Math Open Reference