# Lauren's math vocab.

### 25 terms by tmcmillen

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### rectangle

a parrallelogramnthat has four right angles,but does not have four equal sides.

### obtuse angle

an angle greater than 90 degress but less than 180 degress.

### decagon

a ten sided polygon.

### tiling

when you can fit polygons 360 degress around a point.

### hexagon

a six sided polygon.

### regular polygon

any polygon with all equal sides.

### right angle

an angle equal to 90 degress.

### square

a parallelogram with four right angles and four equal angles.

### octagon

an eight sided polygon.

### heptagon

a seven sided polygon.

### angle

is formed by two sides meeting a vertex in a polygon.

### degress

a unit of measurement for angles.

### equilateral triangle

is a triangle with all equal sides.

### isosceles triangle

a triangle with two equal sides.

### parallel lines

lines that never meet

### parallelogram

a 4 sided polygon where the opposite sides are an equal distance apart.

### pentagon

a 5 sided polygon.

any 4 sided polygon.

### scalene triangle

a triangle with no equal sides.

### polygon

a closed figure/straight sides/no intersections.

### rhombus

[all sides equal]one pair obtuse angle and one pair acute angle.

a 12 sided ploygon.

### ninogon

a 9 sided polygon.

a 4 sided polygon.

### triangle

a 3 sided polygon.

Example: