19 terms

Vocabulary Terms for Geometry Unit - ISM Grade 6 Math

Triangle

Polygon with three sides. Classified by angle and by sides

Acute Scalene

A triangle with all acute angle and has no equal sides.

Right Scalene Triangle

A triangle that one right angle and no equal sides.

Obtuse Scalene Triangle

A triangle that has one obtuse angle and no equal sides.

Acute Isosceles Triangle

A triangle that has all acute angles and has two equal sides.

Right Isosceles Triangle

A triangle that has one right angle and two equal sides.

Obtuse Isosceles Triangle

A triangle that has one obtuse angle and two equal sides.

Equilateral Triangle

A triangle with all sides and angles equal (congruent).

Quadrilateral

Four sided polygon.

Parallelogram

A quadrilateral with two pairs of parallel sides

Rectangle

A quadrilateral with four 90 degrees angles

Rhombus

A quadrilateral with four equal sides

Square

A quadrilateral with four 90 degrees angles and four equal sides.

Trapezoid

A quadrilateral with only one pair of parallel sides

Pentagon

A polygon with five sides.

Hexagon

A polygon with six sides.

Octagon

A polygon with eight sides.

Regular Polygon

Polygon with all sides equal.

Irregular Polygon

Polygon with different measurements of its sides.