# geometry4-1&4-2

## 19 terms

### acute Triangle

A triangle with three angles that are less than 90 degrees

An angle that creates a linear pair with the exterior angle

### Base Angle

An angle that touches the base of a triangle

### Correspondence

similar in character, form, or function

### Congruent Triangles

Two triangles that correspond exactly

### Corollary

A theorem that follows exactly after a theorem

### Correspondence

Two triangles that have some type of similarity

### Equilateral Triangle

All sides of the triangle are congruent

### Exterior Angle

The angle that is formed by extending one of the sides of the triangle

### Hypotenuse

The side of a right triangle that is opposite the right angle

### Isosceles Triangle

A triangle that has at least 2 congruent sides

### Leg

Sides of a triangle that are not the base

### Obtuse Triangle

A triangle that has one angle that is more than 90 degrees

### Remote Interior Angle

An angle that is NOT adjacent to the interior angle

### Right Triangle

A triangle that has one angle that is exactly 90 degrees

### Scalene Triangle

A triangle that has no congruent sides

### Tessellation

A repeating pattern of figures that completely covers a plane region without gaps or overlaps

### Triangle

A shape with three sides and three angles

### Vertex Angle

The point of which the angle is measured