Properties of Circles Tangent

If a line is tangent to a circle, how many points does it touch the circle?

• One

• Two

• Three

• Four

The point where a tangent touches a circle is called the __________.

• point of tangency

• center

• vertex

• focus

A tangent line intersecting with a radius always creates a ____________ angle

• right

• acute

• obtuse

• straight

What are the values of w, x and y?

• w=26, x=128, y=52

• w=32, x=64, y= 26

• w=26, x=116, y=54

• w=26, x=128, y=62

In the diagram, three tangents circumscribe a circle. Find the perimeter of the triangle.

• 48.8

• 47.4

• 39.8

• 36.4

Determine if a tangent line is shown in the picture.

• Yes

• No

• Not Sture

A tangent to a circle is perpendicular to the __________ at the point of tangency.

• radius

• diameter

• chord

• secant

The length of a tangent from a point outside a circle to the point of tangency is called the __________.

• tangent segment

• secant segment

• chord

• radius

If two tangents are drawn to a circle from an external point, then they are __________.

• equal

• unequal

• parallel

• perpendicular

A tangent to a circle forms a right angle with the __________ at the point of tangency.

• radius

• diameter

• chord

• secant