Lines of Symmetry
How many lines of symmetry does a square have?
4
An angle less than 90° is called what
acute
What tool do we use to measure angles?
protractor
What is ¼ of a circle in degrees?
90
A triangle has angles 90°, 45°, and 45°. Is it a right triangle?
yes
An angle that measures exactly 90° is called?
right angle
If one side is on 0° and the other is on 90°, how many degrees is the angle?
90
A full circle is how many degrees?
360
A triangle has no right angles. What type might it be?
acute or obtuse
True or False: A circle has infinite lines of symmetr
True
An angle greater than 90° but less than 180° is called?
obtuse
You see one side at 40° and the other at 110°. What's the angle measure?
70
What is ½ of a circle in degrees?
180
True or False: All triangles have 180° in total.
True
Which letter has exactly one line of symmetry: A, B, or C?
A
What type of angle is 135°?
obtuse
If a missing piece of a right angle is 25°, what is the missing angle?
65
If you turn 1/8 clockwise on a circle how many degrees did you turn?
45
Identify if this triangle is a right triangle: angles are 60°, 60°, 60°.
No
Draw and describe a shape that has no lines of symmetry.
Answers will vary
What type of angle is 89°?
acute
You measure an angle that starts at 30° and ends at 121?
91
What is 3/4 of a circle in degrees?
270
What is the missing angle in a triangle with angles of 90° and 36°?