Geometry Vocab 1
What is a line ?
A 2 dimensional object with no endpoints. It continues on in both directions forever.
What is a ray?
A part of a line that has one end point and then extends forever in a different direction.
A small angle.
True or False: A square is a polygon?
True
Draw a Line with points A and B
Should have 2 arrows and points labeled.
A line segment has how many endpoints?
2 endpoints
What does it mean for shapes to be congruent?
What is right angle?
A 90 degree L shaped angle.
Why are rectangles parallelograms?
Because they have pairs of parallels sides
Draw a ray with points DE and a Line Segment with points AB.
Ray should have one endpoint and line extending forever. Line segment should have two end points.
What exactly is the vertex of an angle?
The point of an angle where two endpoints meet / center of angle...
What are parallell lines?
Lines that are equal distance from each other, but never touch.
Describe an obtuse angle:
A large angle that is more than 90 degrees.
What is a scalene triangle?
A triangle with no equal sides.
Draw two planes names A and C. Not airplanes.
Should be two flat surfaces labeled A and C
Angles that are directly next to eachother.
What is a reflex angle?
An angle with a measure greater than 180 and less than 360, winds somewhat backwards.
Two RAYS!
What is an equilateral triangle?
Draw a plane with two lines that intersect inside the plane. Label the intersection point F.
Drawing will vary.
What is the name of the graph used to plot points?
What is the Pythagorean Theorem?
A^2 + B^2 = C^2
Name the tool used to measure angles?
Protractor
Without looking at anything, what is a Dodecagon?
A polygon with TWELVE sides!
Draw 2 paralell LINES than are both intersected by the same ray. Name the intersection points point A and point B.
Drawings will vary.