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33 Cards in this Set
- Front
- Back
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Parallel
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two lines in a plane that never intersect
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Perpendicular lines
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two lines that intersect to form 90 degree angles
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Acute angle
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angle that measures less than 90 degrees
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Right angle
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angles that measure 90 degrees
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Obtuse angle
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angle that measures between 90 and 180
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Straight angle
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angle that measures 180 degrees
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Reflex angle
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angle that measures between 180 and 360
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Triangle
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a shape with 3 sides; consists of 3 non-collinear points and the line segments that join them
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Polygon
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consist of at least points P1, P2… Pn and the segments P1P2, P2P3…PnP1 such that
The sides intersects only at their endpoints No adjacent sides are collinear |
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Circle
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a set of points which all equal the same distance from the center
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Acute triangles
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all the interior angles of the triangle are acute
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Right triangles
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a triangle that consists of one right angle
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Obtuse triangles
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a triangle that consists of one obtuse interior angle
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Equilateral triangles
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a triangle is equilateral if all 3 sides have the same length
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Isosceles triangles
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a triangle with at least 2 sides the same length
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Scalene triangles
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a triangle with no two sides of equal length
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Congruent polygons
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two figures are congruent if
Corresponding angles are equal Corresponding sides are equal |
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Similar polygons
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two figures are similar if for some correspondence
Corresponding angles are equal Corresponding sides are in proportion |
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Regular polygons
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all its sides have the same length and all its interior angles have the same measure
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Convex polygons
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a polygon is convex if for every pair of points P & Q in the interior, the line segment PQ is contained in the interior
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Parallelogram
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a quadrilateral with both pairs of opposite sides parallel
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Trapezoid
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a quadrilateral with exactly one pair of parallel sides
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Kite
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a quadrilateral with two pairs of adjacent sides of equal length
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Rhombus
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a parallelogram with all sides equal in length
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Rectangle
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a parallelogram with 4 right angles
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Square
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a rectangle with all sides equal in length
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Cuboid
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the volume of a cuboid (rectangular box) is length*width*height
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Area
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the area of a figure is the number of “unit squares” it takes to fill the figure
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Volume
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the volume of an object is the number of unit cubes it takes to fill the object
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Prism
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is a solid with two bases that are congruent n-gons lying in parallel planes, and whose remaining n faces are all parallelograms
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Cylinder
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a solid with two parallel planes
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Pyramid
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regular pyramids is one whose base is a regular polygon and whose slant edges have equal length
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Sphere
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a set of points in space which all equal the same distance from the center
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