# Unit 6 Geometry Set 2

### 26 terms by mulroyb

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### Polygon

a closed figure with straight lines

### Triangle

a polygon with 3 sides

### Angles of a triangle

the sum of the measures of the angles of any triangle is 180 degrees

### Scalene

a polygon with no sides equal

### Isosceles

a polygon with 2 sides equal

### Equilateral

a polygon with all sides equal

### Acute triangle

a triangle with all 3 angles less than 90 degrees

### Equianagular

a polygon with all angles equal

### Obtuse triangle

a triangle with one obtuse angle

### Right triangle

a triangle with one right angle

a polygon with 4 sides

### Parallelogram

a quadrilateral with opposite sides parallel

### Rectangle

a parallelogram with 4 right angles

### Square

a rectangle with all sides congruent

### Rhombus

a parallelogram with all sides congruent

### Trapezoid

a quadrilateral with one pair of parallel sides

### Kite

a quadrilateral with neighboring sides congruent

### Pentagon

a polygon with 5 sides

### Hexagon

a polygon with 6 sides

### Heptagon

a polygon with 7 sides

### Octagon

a polygon with 8 sides

### Nonagon

a polygon with 9 sides

### Decagon

a polygon with 10 sides

### Dodecagon

a polygon with 12 sides

### Icosagon

a polygon with 20 sides

### Congruent polygons

polygons that are the same size and same shape

Example: