Geometry 100 Word List
Adjacent angles / Graph / PolygonArc / Hypothesis / Postulate
Arc measure / Incenter / Prism
Bisector / Indirect proof / Proof
Arc length / Inductive reasoning / Proportion
Annulus / Identity / Pyramid
Axis of symmetry / Inductive reasoning / Pythagorean triple
Argument / Image / Quadrilateral
Circumcenter / Inscribed angle / Ray
Circumscribe / Intersect / Reflection
Centroid / Intercepted arc / Reflex angles
Complementary / Intercepts / Regular
Chord / Inscribed circle / Resultant vector
Collinear / Isosceles triangle / Rhombus
Concave polygon / Kite / Rigid transformation
Equiangular / Length / Rotation
Equilateral / Line / Secant
Convex polygon / Lateral area / Sector
Coplanar / Iteration / Similar
Corresponding angles / Line segment / Sine
Coordinate / Linear pair / Skew lines
Distance formula / Magnitude / Slope
Deductive reasoning / Major arc / Supplementary
Corresponding angles / Median / Tangent
Cosine / Midpoint of a segment / Transformation
Concurrent / Midsegment of a trapezoid / Transversal
Congruent / Minor arc / Two-column proof
Equivalence Properties / Paragraph proof / Trapezoid
Head to tail method / Parallel / Vanishing point
Hypotenuse / Parallelogram / Vector
Face / Perpendicular / Vector sum
Exterior angle / Point / Vertex
Glide reflection / Point of tangency / Vertical angles
Golden ratio
These words are used throughout the year in geometry and are also used in my ABC Book Lesson Plan. Through the year the students enter these terms into their notes as we go through the various chapters and then also use the words in various ways to help them learn the term, the definition, and application of the term. Some of the ways we have worked with the terms are listed below:
Worksheets
Index card spiral book – terms are added to the spiral notebook (one on
each card) with the definition and a sketch. The spiral index card book can be added as the year progresses and also can be used to review at any time easily.
Student written questions
Playing charades – terms for the chapter and/or from the word list are
written on index cards and distributed to the students. The students then take turns acting out the terms. Some terms are very difficult to act out which makes this fun and challenging.
Using PowerPoint or the SmartBoard students identify the terms based on
a single picture or sketch or construction.