Tangents in Circles

Question 1

Tangent

Answer 1

A line, segment, or ray that touches a circle at one point.

Question 2

Point of Tangency

Answer 2

Point where tangent touches the circle

Question 3

Theorem 12.1 - Tangent Perpendicular to radius.

Answer 3

Tangent line is perpendicular to the radius and forms a right triangle….Use a² +b² = c² to find missing side

Question 4

Theorem 12.2 (Converse 12.1)

Radius is perpendicular to Tangent

Answer 4

Radius perpendicular to Tangent then forms a right triangle.

Use a² + b² = c²

to check if right triangle.

Question 5

Theorem 12.3 Tangent segments congruent

Answer 5

Two tangent segments meet at the same exterior point then segments are congruent.