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CPM Yr 1, Ch 4 Vocab
Chapter 4 - Mrs. Poppington Sees The World vocabulary
Question | Answer |
---|---|
An angle with measure greater than 0 degrees and less than 90 degrees. | acute angle |
An angle that measures 90 degrees. | right angle |
An angle with measure greater than 90 degrees and less than 180 degrees. | obtuse angle |
The opposite angles where two lines meet. | vertical angles |
A triangle in which all three angle measures are less than 180 degrees. | acute triangle |
A triangle in which one angle is a right angle. | right triangle |
A triangle with an obtuse angle. | obtuse triangle |
A triangle with no equal side lengths. | scalene triangle |
A triangle with two or more sides of equal length. | isoceles triangle |
A triangle with all side lengths equal. | equilateral triangle |
A quadrilateral with one pair of parallel sides. | trapezoid |
A quadrilateral with both pairs of opposite sides parallel. | parallelogram |
A quadrilateral with four right angles. | rectangle |
A quadrilateral with all four sides of equal length. | rhombus |
A special rectangle with all sides of equal length. | square |
A two-dimensional closed figure of straight line segments connected end to end. | polygon |
A polygon in which all side lengths are equal and all angle measures are equal. | regular polygon |
A polygon with four sides. | quadrilateral |
A polygon with five sides. | pentagon |
A polygon with six sides. | hexagon |
A polygon with eight sides. | octagon |
The point where two consecutive sides of a polygon meet. | vertex |
A line segment that connects two vertices of a polygon and is not a side. | diagonal |
A set of points at a fixed distance (radius) from a point (center). | circle |
Two straight lines on a two-dimensional plane that do not intersect no matter how far they are extended. | parallel lines |
Two lines on flat surface which make a right angle when they meet. | perpendicular lines |
The part of a line between two points. | line segment |
Part of a line that starts at a point on the line and contains all the points on the line that are on one side of the starting point. | ray |
A special side of a polygon used to compute area. | base |
In a triangle, parallelogram, or trapezoid, the perpendicular distance from a vertex to the line containing the "opposite" side (possibly extended). | height |