Geometry presents a logical development of the basic concepts and understanding of Euclidean geometry and coordinate geometry. Concepts and skills involve deductive reasoning taught through the use of direct and indirect proofs, angles, parallel lines, triangles, proving triangles congruent, special right triangles, the Pythagorean Theorem, polygons, circles, area, volume, coordinate geometry, constructions and transformations.  Below you will find the mastery list for this course as well as Remind101 messages that students can consult at any time. 

To join a Google Classroom, use your ksdnj email (Ms. Ostrom in the IMC has everyone's email information if you forgot) and use the appropriate code for your class listed below:

Geometry Pd 3: nfjx6uj
Geometry Honors Pd 2: gjfv2ae
Geometry Honors Pd 8: dtga7zg

The online textbook can be found at

Username: astudents960
password: devito101

Time Frame

Students will have mastered the following:

September – June

Essentials of Geometry

  • Identify points, lines, and planes
  • Use segments and congruence
  • Use midpoint and distance formula


    Reasoning and proof

  • Use and apply inductive/deductive reasoning
  • Analyze conditional statements
  • Apply properties , postulates, and theorems to formal proofs

    Parallel and Perpendicular Lines

  • Identify angles formed by parallel lines and a transversal.
  • Prove lines are parallel
  • Prove theorems about perpendicular lines

    Congruent and Similar Triangles

  • Apply properties, postulates, and theorems to analyze triangle relationships
  • Midsegment theorem and coordinate proof
  • Use properties of similarity on triangles
  • Apply triangle inequalities
  • Use perpendicular bisectors and angle bisectors of triangles
  • Use medians and altitudes of triangles.

    Right Triangles and Trigonometry

  • Apply the Pythagorean Theorem and its Converse
  • Use Similar Right Triangles
  • Use Special Right Triangles
  • Apply the Sine, Cosine, and Tangent Ratios
  • Solve Right Triangles


  • Classify Polygons
  • Find angle measures
  • Use and apply properties of parallelograms
  • Apply properties of rhombi, rectangles, squares, trapezoids, and kites
  • Find perimeter and area of quadrilaterals




  • Useproperties of tangents
  • Find arc measures
  • Apply properties of chords and other angle relationships
  • Use inscribed angles and polygons
  • Find segment lengths in circles
  • Write and graph equations of circles
  • Find circumference and arc length
  • Find area of circles and sectors


    Transformations and Vectors

  • Translate figures and use vectors
  • Basic operations with matrices
  • Perform and identify reflections, rotations, and dilations
  • Apply compositions of transformations
  • Identify symmetry using lines of symmetry



  • Explore solids
  • Find volume and surface area of regular solids
  • Identify similar solids