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ACT Math and Assessment - Geometry
Here you will learn some English words related to geometry, such as "tangent", "vertex", "ellipse", etc. that will help you ace your ACTs.
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the measure of how steep a line is, found by dividing the change in height by the change in horizontal distance
a unit for measuring angles, defined by the angle made when the radius of a circle is laid along its edge
the length of a straight line drawn from the center of a circle to any point on its outer boundary
a straight line from one side of a round object, particularly a circle, passing through the center and joining the other side
(geometry) the length of the external boundary of a curved shape, especially a circle
the amount of space that a substance or object takes or the amount of space inside an object
the space between two lines or surfaces that are joined, measured in degrees or radians
one of a pair of opposite angles made by two intersecting lines, which are always equal
an angle formed between two sides of a polygon that lies inside the shape
an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)
pairs of angles that share a common side and vertex in a polygon or between intersecting lines
(of lines or planes) intersecting each other at a 90 degree angle
(geometry) any flat shape with four straight sides, the opposite sides of which are equal and parallel to each other
characterized by or resembling a tetrahedron, which has four triangular faces
(geometry) a flat shape with four equal sides in which opposite angles are equal
a small circle whose center moves around the circumference of a larger circle
a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches
(geometry) a symmetrical open curve that is similar to the path of an object thrown into the air passes till it falls back to earth
a flat geometric shape consisting of three straight sides and one right angle
a triangle in which all three interior angles are less than 90 degrees
the longest side of a right-angled triangle, opposite the right angle, and defined as the side opposite the right angle in a right-angled triangle
a three-dimensional geometric shape with two parallel circular bases connected by a curved surface at a right angle to the bases
a three-dimensional geometric shape that has a rectangular base and four triangular faces that meet at a single point called the apex
(geometry) a lack of symmetry or equivalence in shape or size between the two sides or parts of something
a point where two or more lines, edges, or rays meet to form an angle, or the point at which the sides of a polygon intersect
the side of a geometric shape, usually the one considered as the bottom, from which the height is measured
a pair of geometric figures, such as lines or planes, that do not meet or intersect, no matter how far they are extended
a series of numbers in which each term after the first is found by multiplying the previous term by a fixed, non-zero number
the total area that the surface of a three-dimensional object occupies
(of a line) intersecting two or more other lines at different points
one-fourth of a circle, formed by two perpendicular radii and the connecting arc
a straight line that a curve approaches indefinitely but never intersects, characterizing the limiting behavior of the curve
a straight line that touches a curve or surface at exactly one point, known as the point of tangency
(geometry) to move a shape or figure from one position to another without rotating, resizing, or otherwise altering its shape
