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Topic 16: Envision Math 4th Grade
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Gravity
Terms in this set (17)
square
There are 4 right angles, All sides are the same length.
quadrilateral
A polygon with 4 sides.
rectangle
There are 4 right angles and opposite sides are parallel
parallelogram
Opposite sides are parallel. 2 pairs of parallel sides.
trapezoid
There is only one pair of parallel sides.
intersecting lines
Lines that pass through the same point.
parallel lines
Two lines that never intersect.
perpendicular lines
Lines that intersect to form right angles.
equilateral triangle
A triangle with 3 sides the same length.
isosceles triangle
A triangle that has at least 2 sides the same length.
scalene triangle
A triangle that has 0 sides the same length.
right triangle
A triangle with 1 right angle.
acute triangle
A triangle with 3 acute angle. All of its angles measure less than 90 degrees.
obtuse triangle
A triangle with 1 obtuse angle. One angle has a measure greater than 90 degrees.
line of symmetry
The fold line on a symmetrical shape.
symmetrical shape
One half of a shape is a mirror image of the other half.
rhombus
Opposite sides are parallel and all sides are the same length
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