Basics of Geometry
More Basics
Things about Angles
More Angles
Properties
100
An unproven statement that is based on a pattern or observation.
What is a conjecture?
100
Points that lie on the same line.
What are collinear points?
100
The units that we measure angles in.
What are degrees?
100
To divide a segment or angle in half.
What is a bisector? (to bisect)
100
AB = AB and Angle A = Angle A
What is the Reflexive Property?
200
Looking for patterns and making conjectures.
What is inductive reasoning?
200
Has one endpoint and goes forever in one direction.
What is a ray?
200
Two rays that have the same endpoint.
What is an angle?
200
Two angles that are not adjacent and their sides are formed by intersecting lines; means across from.
What are vertical angles?
200
Multiplying and Adding forwards and backwards.
What is the Commutative Property?
300
Has no dimension.
What is a point?
300
Has two endpoints.
What is a segment?
300
An angle whose measure is exactly 90 degrees.
What is a right angle?
300
Two angles whose sum is 90 degrees.
What are complementary angles?
300
AB = CD and CD = AB
What is the Symmetric Property?
400
Has two dimensions.
What is a plane?
400
Lines that lie on the same plane.
What are coplanar lines?
400
An angle whose measure is less than 90 degrees.
What is an acute angle?
400
Two angles that share a common vertex and side.
What are adjacent angles?
400
If Angle A = Angle B and Angle B = Angle C, then Angle A = Angle C.
What is the Transitive Property?
500
Has one dimension.
What is a line?
500
When something is equal, or the same, in Geometry.
What is congruency? (congruent)
500
An angle whose measure is exactly 180 degrees.
What is a straight angle?
500
Two angles whose sum is 180 degrees.
What are supplementary angles?
500
Mrs. Szczechowski's favorite property.
What is the Distributive Property?
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