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Math Vocab 6.8 Measuring angles

Terms

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degrees
a unit used to measure angles
obtuse angle
an angle between 90 and 180 degrees
protractor
used to measure angles
congruent
Having the same size and shape
right angle
an angle measuring 90 degrees
area
a measurement that describes the number of square units that cover a surface
isosceles triangle
a triangle with two equal sides
diameter
The distance across a circle through its center.
straight angle
An angle measuring 180 degrees.
trapezoid
A quadrilateral with one pair of parallel sides
right triangle
a triangle with one right angle
vertex
The corner (point) of an angle
radius
A line segment with one endpoint at the center of a circle and the other endpoint on the circle
angle
a figure formed by 2 rays meeting at the same endpoint
rhombus
a parallelogram with four equal sides
sum
a quantity obtained by addition
perimeter
the distance around the outside of a shape
acute angle
an angle less than 90 degrees but more than 0 degrees
parallelogram
A quadrilateral with opposite sides paralled. Both pairs of opposite angles are also equal.
product
a quantity obtained by multiplication

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