Vocabulary for circle
distance around a circle
circumference
Sum of all central angles in a circle
360 degrees
Find the measure of the circumference for a circle whose diameter is 6 inches
18.84 inches
What is the formula for finding perimeter of a rectangle
2l +2w
What triangle has no sides the same?
Scalene
line segment that goes through the center of the circle and has both endpoints on the circel
diameter
What fractional part of the diameter is the radius
1/2
What is the measurement of the radius of a circle whose diameter is 10 in.
5 in.
How many times do parallel intersect?
Zero
What kind of angles do perpendicular form?
Right
line segment from center to point on the circle. It is half the length of the diameter
radius
what do you use to measure an angle
protractor
If angle RPS is 50 degrees, angle SPT is 90 degrees what is the measurement for angle QRT?
220 degrees
How many vertices does a hexagon have?
6
What is the measure of the angles of rhombus if angle A is 125 degrees, angle B is 55 degrees and angle C is 55 degrees?
125 degrees
line segment whose endpoints are on the circle
chord
What is the measure of angle RPS on p. 172
50 degrees
If the radius of a circle is 11 ft what is the measure of the diameter
34.54
If the length of a square is 9 ft what is the perimeter?
36 ft
Can you draw a triangle that has the following measurements? 10 inches, 4 inches and 12 inches
no
angle with the center of a circle as its vertex and radii as sides
central angle
What is the measure of arc QPR on p. 172
130 degrees
What is the measure of the radius of a circle when the diameter is16 in.
8 in
92 degrees
What is the difference between a diameter and a chord?
The diameter must pass through the center of the circle and the chord doesn't have to.