Grade 5 • Mathematics • Geometry
Geometry Vocabulary
- Ordered Pair: a pair of numbers where order is important, for example, (4,6) is different to (6,4); often used to indicate on a coordinate plane, graph or map
- Coordinate Plane: a plane containing two perpendicular axes (x and y) intersecting at a point called the origin (0,0)
- Two-Dimensional: a figure that can be measured in two directions, such as length and width
- Angles: the figure formed when two rays or line segments share the same endpoint
- Point: an exact position or location
- Line: a straight path extending in both directions with no endpoints
- Line Segment: a part of a line that includes two points, called endpoints, and all the points between them
- Perpendicular Lines: lines that intersect to form right angles
- Parallel Lines: lines in a plane that never intersect
- Base: a side of a polygon or a face of a solid figure by which the figure is measured or named
- Quadrilateral: a polygon with four sides
- Parallelogram: a quadrilateral (4-sided figure) that has both pairs of opposite sides equal and parallel (Example: all rhombi, [plural for rhombus], squares and rectangles are parallelograms)
- Regular Polygons: a polygon that has all equal sides or equal angles
- Irregular Polygons: a polygon that does not have all equal sides or all equal angles
- Rectangle: a quadrilateral with four right angles and two pairs of opposite equal parallel sides
- Square: a quadrilateral with four equal sides and four right angles, opposite sides that are parallel, two diagonals that bisect at right angles, and four lines of symmetry
- Triangle: a polygon with three angles and three sides
- Rhombus: a parallelogram with four equal sides and equal opposite angles
- Trapezoid: a quadrilateral with one pair of parallel sides
Geometry Activities
- Name two-dimensional figures and find examples at home.
- Draw different polygons within a piece of triangle grid paper, or use combinations of triangles to create other polygons.
- Make flash cards of different geometric figures and their properties.
- Identify, describe, and different household objects as two-dimensional figures.
- Use a compass or a computer to draw geometric figures.
Geometry Independent Practice
This course content is offered under a CC Attribution Non-Commercial Share Alike
Links to an external site. license. Content in this course can be considered under this license unless otherwise noted.