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37 Cards in this Set
- Front
- Back
- 3rd side (hint)
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angle
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an opening between intersecting lines or segments.
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Saxon 6/5 Lesson 32
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right angle
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an angle with a square corner (90 degrees)
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Saxon 6/5 Lesson 32
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acute angle
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an angle that is smaller than a right angle (< 90 degrees)
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Saxon 6/5 Lesson 32
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obtuse angle
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an angle bigger than a right angle (> 90 degrees)
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Saxon 6/5 Lesson 32
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straight angle
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an angle that is opened to form a straight line (180 degrees)
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Saxon 6/5 Lesson 32
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plane
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a flat surface that extends without end
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Saxon 6/5 Lesson 32
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polygon
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a flat shape formed by line segments that close in an area
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Saxon 6/5 Lesson 32
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vertex
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the point where two sides meet to form an angle
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Saxon 6/5 Lesson 32
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4 polygon facts
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1) The number of vertices and angles equals the number of sides 2) number of sides is 3 or more 3) named for the number of sides 4) sides are straight, never curved
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Saxon 6/5 Lesson 32
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What is a quadrilateral? Give 4 examples.
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a four sided polygon (square, rectangle, parallelogram, trapezoid)
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Saxon 6/5 Lesson 32
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congruent
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describes figures that have the same size AND shape
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Saxon 6/5 Lesson 32
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similar
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describes figures that have the same shape
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Saxon 6/5 Lesson 32
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round numbers
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Numbers that are easy to work with and end with 1 or more zeros.
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Saxon 6/5 Lesson 33
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Steps to round a number to nearest hundred:
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find the multiple of 100 to which the number is nearest
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Saxon 6/5 Lesson 33
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Steps to check a division answer
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multiply the quotient by the divisor and add the remainder to this product
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Formula for calculating elapsed time
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later time - earlier time = elapsed time
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elapsed time
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the amount of time between two points in time
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acute triangle
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a triangle with 3 acute angles
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Saxon 6/5 Lesson 36
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right triange
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a triangle with a right angle
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Saxon 6/5 Lesson 36
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obtuse triangle
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a triangle with an obtuse angle
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Saxon 6/5 Lesson 36
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equilateral triangle
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a triangle with 3 sides the same length
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Saxon 6/5 Lesson 36
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isosceles triange
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a triangle with at least 2 sides the same length
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Saxon 6/5 Lesson 36
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scalene triangle
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a triangle with sides of different lengths
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Saxon 6/5 Lesson 36
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classification of triangles
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sorting triangles by the size of their angles and by relative lengths of their sides
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Saxon 6/5 Lesson 36
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3 tips for drawing pictures of fractions
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denominator tells how many pieces to cut; numerator tells us how many to shade; pieces must be same size
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pentagon
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5 sided polygon
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Saxon 6/5 Lesson 32
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hexagon
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6 sided polygon
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Saxon 6/5 Lesson 32
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heptagon
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7 sided polygon
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Saxon 6/5 Lesson 32
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octagon
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8 sided polygon
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Saxon 6/5 Lesson 32
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decagon
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10 sided polygon
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Saxon 6/5 Lesson 32
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dodecagon
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12 sided polygon
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Saxon 6/5 Lesson 32
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n-gon
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n sided polygon
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Saxon 6/5 Lesson 32
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intersect
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term used to decribe lines that cross each other
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Saxon 6/5 Lesson 31
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parallel lines
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lines that go in same direction but never intersect, always stay the same distance apart;like train tracks
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Saxon 6/5 Lesson 31
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perpendicular lines
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lines that intersect and form square corners
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Saxon 6/5 Lesson 31
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oblique lines
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lines that are neither parallel nor perpendicular
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Formula for comparison problem
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Larger - smaller = difference
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