Line It Up
A ______ goes straight in both directions and never ends.
What is a line?
An _______ is made by two rays that meet at one point (the vertex).
What is an angle?
Lines that run side by side and never meet.
What is parallel lines?
A_______has one endpoint and goes on forever in one direction.
What is a ray?
True or False: A right angle measures smaller than 90 degrees.
False: A right angle measures exactly 90 degrees.
Lines that meet to form a right angle.
What is Perpendicular Lines?
A _______ _______has two endpoints and does not go on forever.
What is a Line segment?
What is an acute angle?
Lines that cross each other at any point.
What is intersecting lines?
True or False: A point does not show exact location?
False
I am larger than 90 degrees, but no bigger than 180 degrees. What angle am I?
What is an obtuse angle?
True or False: A plus sign + is an example of perpendicular lines?
What is true?
True or False: Two different rays can start at the same end point and still not form an angle.
Answer: False — if they share an endpoint and go in different directions, they form an angle.
This tool is used to measure angles.
What is a protractor?
True or False: All perpendicular lines are intersecting lines, but not all intersecting lines are perpendicular.
What is true?