Vocabulary
What is a pentagon?
A polygon with 5 sides.
What does a point represent?
The corner of a shape, where two lines meet, etc.
How do you write line AB?
Write AB together with a line with arrows on the ends above the AB.
The endpoint of an angle is called a vertex.
True
Can a square be a rectangle?
Yes, it has 2 sets of parallel sides and 4 right angles
What are the sides in a polygon?
Line segments
Do points have specific sizes?
No, all points are the same size.
How do you write line segment AB?
Write AB together with just a line above with no arrows on the ends.
An angle is formed by two line segments.
False, it is formed by two rays.
Can a square be a rhombus?
Yes, it has 4 congruent sides that are and two sets of parallel sides.
What is a nonagon?
A polygon with 9 sides.
What is a line?
A set of points.
How do you write point A?
Simply write: point A, or just A
The corner of a rectangle would be a point.
True
Can a rectangle be a square?
No, not all sides are congruent.
Is a polygon a simple or not a simple closed curve?
Simple
A plane is:
Something flat that goes on forever.
How do you write ray AB?
Write AB with a line and one arrow pointing the direction the ray goes.
The top of your desk would be considered a plane.
True, it is a flat surface that could represent an infinitely extending plane.
Can a rhombus be a square?
No, not all angles are right angles.
What is an irregular polygon?
Not all sides and angles are congruent
What is an endpoint?
The end of a line segment.
How do you write angle ABC?
Make an angle symbol with ABC beside it.
A ray extends in two directions.
False, a ray only extends in one direction.
Can a parallelogram be a rectangle?
No, not all angles are right angles?