Geometry Flashcards
What is a point?
A fixed location in space. It is named with a capital letter.
What is a line segment?
Part of a line between two endpoints
What are parallel lines?
Lines in the same plane that do not intersect
What are perpendicular lines?
Intersecting lines that form a right angle
What is a plane?
A flat surface that extends in all directions and is named by a lowercase letter
What is an angle?
Formed by two rays with the same endpoint
What is a vertex?
The endpoint in which two rays intersect
What is a ray?
Part of a line that has one endpoint and goes on without end in one direction
What is a degree?
The unit used to measure an angle
What is a pentomino?
Five equal squares arranged so that at least one whole side of each square is touching a whole side of another square
What is a triangle?
A plane that has three sides, vertices, and angles
What is an equilateral triangle?
A triangle that has three sides of equal lengths
What is an isosceles triangle?
At least has two sides of equal lengths
What is a scalene triangle?
Three sides of unequal length
What is a right triangle?
A triangle with one right 90° angle