Angles
Which shape does not have angles?
Circle
It is exactly 90 degrees
What is a right angle?
How many hours are in 3 days?
24 x 3 = 72?
Has an endpoint and goes on in one direction?
What is a Ray
If the clock hands were pointing to 9 and 12, what kind of angle would that be?
90 degree
Two angles have a total measure of 180 degrees. What is the measure of the individual angles?
What is 90 degrees?
It is less than 90 degrees.
What is an acute angle?
22 x 33 =
726
Has two endpoints and is part of a line?
Line Segment
Is an angle of 145 degrees right, obtuse or acute
obtuse
Which statements are false?
A. There are 360 one-degree angles in a circle.
B. There are 120 one-degree angles in a circle.
C. There are 90 one-degree angles in a right angle.
D. There are 180 one-degree angles in a right angle.
B - There are 360 one-degree angles in a circle
D - There are 90 one-degree angles in a right angle
Straight angle
4 4/5 - 2 6/5=
8/5 or 1 3/5
2 lines crosses each other.
Intersecting Lines
How many degrees are in a straight angle? Show the angle on your boards.
180
All 6 angles made in a circle are equal in degrees. What is the degrees of each angle?
360 / 6 = 60 degrees
An angle that is more that 90 degrees
obtuse angle
2 3/4 + 3 2/3 =
77/12 or 6 5/12
an exact location in space
A point
If an angle is 1/2 of a circle what is the measure of the angle?
Draw a straight angle on your whiteboard with one line intersecting diagonally in the middle. The acute angle measures 60 degrees. What does the other angle measure?
180 - 60 = 120 degrees.
A full rotation of a circle?
360 Degrees
3679 / 6 =
613 R1
Has two arrows and goes on in both directions?
A Line
If An angle is 1/4 of a circle, then what is the measure of the angle?