# What is the formula for similar triangles?

## What is the formula for similar triangles?

The formula used to check if two triangles are similar or not depends on the condition of similarity. For two triangles △PQR and △XYZ , similarity can be proved using either of the following conditions, ∠P = ∠X, ∠Q = ∠Y and ∠R = ∠Z. PQ/XY = QR/YZ = PR/XZ.

How do you teach similar triangles?

The SAS rule states that two triangles are similar if the ratio of their corresponding two sides is equal and also, the angle formed by the two sides is equal. Side-Side-Side (SSS) rule: Two triangles are similar if all the corresponding three sides of the given triangles are in the same proportion.

### What are the 3 ways to prove triangles similar?

You also can apply the three triangle similarity theorems, known as Angle – Angle (AA), Side – Angle – Side (SAS) or Side – Side – Side (SSS), to determine if two triangles are similar.

What are the rules of similarity?

Two triangles are similar if they meet one of the following criteria. : Two pairs of corresponding angles are equal. : Three pairs of corresponding sides are proportional. : Two pairs of corresponding sides are proportional and the corresponding angles between them are equal.

## How do you solve similar triangles?

Similar triangles are easy to identify because you can apply three theorems specific to triangles. These three theorems, known as Angle – Angle (AA), Side – Angle – Side (SAS), and Side – Side – Side ( SSS ), are foolproof methods for determining similarity in triangles.

Angle BAD = Angle DAC = x°