Types of Angles
What is an angle smaller than 90° called?
Acute angle
What do we call lines that never meet?
Parallel lines
What tool do we use to measure angles?
Protractor
Name something that has a right angle?
Corner of a book/table
True or False: All right angles are equal.
True
What is a 90° angle called?
Right Angle
What do we call lines that cross?
Intersecting lines
How many degrees are in a right angle?
90°
Name something with parallel lines.
Train tracks, notebook lines
Can an angle be 200°?
Yes (but it's larger than what we usually study in Grade 4)
What is an angle greater than 90° but less than 180° called?
Obtuse angle
What do we call lines that meet at a right angle?
Perpendicular lines
Is 45° acute or obtuse?
Acute
Name something with intersecting lines.
Roads crossing
If you turn halfway around, how many degrees is that?
180°
What is a 180° angle called?
Straight angle
Do parallel lines ever touch?
No
Is 120° acute, right, or obtuse?
Obtuse
Name something with an obtuse angle.
Open scissors, clock at certain times
What type of angle is exactly 90°?
Right angle
Name two types of angles.
Acute, right, obtuse, or straight
Draw or describe perpendicular lines.
Lines that meet at 90°
Which is bigger: 60° or 100°?
100°
What type of angle is a straight road?
Straight angle (180°)
If one angle is 30° and another is 60°, what do they add to?
90°