Lets remind ourselves about the properties of some special triangles.

## Equilateral triangles

In an equilateral triangle:

- All sides are equal lengths
- All angles are degrees(60)

## Isosceles triangles

Isosceles triangles have:

We can use these special properties to help us solve triangle problems.

#### Worked Examples

##### Question 1

Find the value of $x$`x`.

#####

##### Question 2

Find the value of $x$`x`.

##### Question 3

Consider the given diagram.

a) Find the value of $a$`a`, giving reasons.

b) Find the value of $b$`b`, giving reasons.