Angles 1
What is a right angle?
90* Angle
What is a straight angle?
180* angle
What is an acute angle?
Less than 90*
What types of angles can be part of a complementary angle pair?
Acute Angles
Where was the first bristled toothbrush invented?
China
What is an obtuse angle?
More than 180*
What are complementary angles?
Angles that add to 90*
What determines the size of an angle?
The rotation between its sides.
Fill in the Blank:
Premise 12: All straight angles are ______.
Equal!
How many bristles does the average toothbrush have?
Around 2,500
What are supplementary angles?
Angles that add to 180*
What are adjacent angles?
Angles that share a common side and a common vertex.
What is a perigon?
A 360 degree angle
Suppose I have a 90* angle. If I were to bisect the angle, how large would each resulting angle be?
45*
Fill in the blank:
The average person spends a total of _______ brushing their teeth during their lifetime.
0.10547 years
38.5 days
924 hours
55,540 minutes
3,326,400 seconds
What do you call a line that cuts an angle into two equal angles?
What are vertical angles?
An angle pair formed by continuing the sides of an original angle. The pair of angles are also equal.
What do you call the point where the angle originates?
The Vertex
What is the measure of the complement of a 67* angle?
23*
What percentage of women are willing to share their toothbrush with someone else?
(According to a survey by the Oral Health Foundation in Britain)
20%
What is a reflex angle?
Between 180* and 270*
What is an oblique angle?
An angle that is not right and not straight.
What do you call lines that create a right angle?
Perpendicular
What is the measure of the supplement to a 24* angle?
156*
What percentage of men are willing to share their toothbrush with someone else?
(According to a survey by the Oral Health Foundation in Britain)
32%