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geometry vocabulary
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Gravity
Practice the words we've been using in class.
Terms in this set (16)
Supplementary Angles
Two angles whose sum is 180 degrees.
complementary angles
Two angles whose sum is 90 degrees.
Adjacent Angles
Two angles which share a common side and vertex, but do not overlap.
Right angle
An angle which measures 90 degrees.
Straight Angle
An angle whose measure is 180 degrees.
Perimeter
The sum of all sides of an object.
Area of a rectangle
Length times width
Area of a square
side length times side length
Area of parallelogram
A = bh
Area of Triangle
A = 1/2bh
Area of trapezoid
A = 1/2h(b1 + b2)
Triangle sum theorem
The sum of the three angles in any triangle is 180 degrees.
Vertical angles
a pair of nonadjacent angles formed when two lines intersect. They are equal in measure.
perpendicular
Two lines that intersect at a right angle.
Obtuse Angle
An angle that is greater than 90 degrees, but less than 180 degrees.
Acute Angle
An angle that is greater than 0 degrees, but less than 90 degrees.
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