Measuring angles
3/4 of a circle is how many degrees?
270°
What is the first step when using your protractor to draw an angle?
Place the center point of the protractor at the vertex of an angle.
What is your third step when using a protractor to measure angles?
Count up from the zero to the second ray.
Which angle is two angles that sum 90°?
Complementary angles.
230°+130°=
360°
1/4 of a circle is how many degrees?
90°
What is the second step when using your protractor to draw an angle?
Line up the bottom ray with zero.
What degree is the center point line under?
90°
Which angle is two angles that sum 180°?
Supplementary angles.
180°+__= 360°
180°
2/3 of a fraction is how many degrees?
240°
What is the third step when using your protractor to draw an angle?
Count up from the zero to the second ray.
Where do you place the protractor on an angle?
On the Angle Vertex
If the sum of the angle is 90° and <b is 75° what is < a?
<a is 15
98°+__=180°
82°
What is one pattern block you can use in order to measure a right angle?
What is your first step when using a protractor to measure angles?
Place the center point of my protractor at the vertex of my angle.
When measuring an acute angle to the right of the screen, do you use the numbers on the bottom or the top of the protractor?
The bottom of the protractor.
If the sum of the angle is 180° and <b is 110° what is < a?
<a is 70°
135°+__=275°
140°
What are the two pattern blocks you can use in order to measure a reflex angle?
A hexagon and a square.
What is your second step when using a protractor to measure angles?
Line up the bottom ray with zero.
When measuring an obtuse angle to the left of the screen, do you use the numbers on the bottom or the top of the protractor?
The bottom of the protractor.
If <a is 125° and the total of the entire angle is 180° what is the degree for the missing <b
<b is 55°
250°+85°=
335°