Understand the problem
1 of 3
First, understand the question
Do not start calculating until the given information and the required answer are clear.
Problem
A circle touches sides and at and . Decide which tangent segments must be equal.
What are we trying to do?
Identify equal tangent segments by checking that both start from the same external point.
Use the visual to test the rule
Use the control to change the mathematical situation and watch what remains true.
Choose one starting vertex
Tap a vertex. Watch where its two tangent segments end.
Helpful?