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Update August 16, 2026

New Grade Level for Math: High School Geometry!

High school Geometry is now available on The Visual Non-Glossary! There are 52 structured visuals and lesson plans, in English and Spanish. Here are the words that have been added:

  • 30°-60°-90° triangle
  • 45°-45°-90° triangle
  • Angle-Angle (AA) Similarity Theorem
  • Angle-Angle-Side (AAS) Congruence Theorem
  • angle (degree) of rotation
  • Angle-Side-Angle (ASA) Congruence Theorem
  • center of a circle
  • center of dilation
  • center of rotation
  • coordinate
  • corresponding angle
  • corresponding side
  • dilation
  • distance
  • enlargement
  • endpoint
  • horizontal line of reflection
  • hypotenuse
  • Hypotenuse-Leg (HL) Congruence Theorem
  • line
  • line of relfection
  • axis/line of symmetry
  • line segment
  • linear equation
  • midpoint
  • parallel
  • perpendicular
  • point
  • point-slope form
  • Pythagorean Theorem
  • Pythagorean triple
  • ray
  • reduction
  • reflection
  • reflectional symmetry
  • right triangle
  • rotation
  • rotational symmetry
  • scale factor
  • Side-Angle-Side (SAS) Congruence Theorem
  • Side-Angle-Side (SAS) Similarity Theorem
  • Side-Side-Side (SSS) Congruence Theorem
  • Side-Side-Side (SSS) Similarity Theorem
  • slope
  • slope-intercept form
  • special right triangle
  • standard form
  • transformation
  • translation
  • Triangle Proportionality Theorem
  • vertical line of reflection
  • y-intercept
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