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Circle Geometry Vocabulary

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.
a)
Secant
b)
Diameter
c)
Radius
d)
Chord
2.
a)
acute angle
b)
obtuse angle
c)
right angle
d)
straight angle
3.
a)
Secant
b)
Diameter
c)
Radius
d)
Chord
4.
a)
diameter
b)
radius
c)
center
5.
a)
center
b)
diameter
c)
radius
6.
a)
center
b)
diameter
c)
radius
7.

The radius is ___________ the length of the diameter.

a)

twice

b)

half

c)

three times

d)

equal to

8.

Which of the following pictures best shows a perpendicular bisector?

a)
b)
c)
d)
9.

A line that touches the circumference of a circle at only one point is called...

a)

a chord

b)

a bisector

c)

a tangent line

d)

an external line

10.

The ____________ of this circle is 9 inches.

a)

diameter

b)

chord

c)

width

d)

radius

11.

What formula is used when trying to determine a missing side length in a right triangle?

a)

sum of interior angles

b)

Pythagorean theorem

c)

triangle perimeter theory

12.

Assuming this is a right triangle, what is another name for AC?

a)

hypotenuse

b)

leg

c)

adjacent side

d)

opposite side

13.

Which of the following is an isosceles triangle?

a)
b)
c)
d)
14.

∠BAC is a(n) ____________ angle

a)

interior

b)

exterior

c)

obtuse

d)

right

15.

Which of the following is NOT a way that we describe a 90o angle?

a)

perpendicular

b)

right

c)

square

d)

bisector

16.

These two inscribed angles share an arc. That makes them...

a)

accordant

b)

similar

c)

congruent

d)

corresponding

17.

If you drew a radius from C to the point of tangency, at what angle would l and the radius intersect?

a)

60o

b)

90o

c)

45o

d)

We don't have enough information to answer this question.

18.

Both ∠ACB and ∠AOB are ___________ by the arc AB.

a)

surrounded

b)

shared

c)

subtended

d)

inscribed

19.

If OD bisects AC, what is the measure of ∠ABD?

a)

60o

b)

90o

c)

45o

d)

We don't have enough information to answer this question.

20.

Two lines that intersect to form a 90 degree angle are

a)

Parallel lines

b)

Perpendicular Lines

c)

Lines segments

d)

Rays