# Circle Theorem: Tangents from the Same Point Are the Same Length

## Circle Theorem: Tangents from the Same Point Are the Same Length

Two tangents drawn from the same point outside of the circle are the same length and form two congruent right triangles.

## How to Use the Circle Theorem that Tangents from the Same Point Are the Same Length

### Question

The tangent OA is 10 cm in length. What is the length of the tangent OB?

### Step-by-Step:

# 1

Tangents drawn from the same point outside of the circle have the same length.

OB = OA = 10 cm

### Answer:

The tangent OB has length 10 cm.