The flashcards below were created by user
Babosstick
on FreezingBlue Flashcards.
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2 rays with a common endpoint(vertex)
Angle
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Same size and shape
Congruent
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Measures less than 90 degrees
Acute angle
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Measures 90 degrees
Right angle
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Measures between 90-180 degrees(greater than 90 degrees)
Obtuse angle
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Angles that add up to 90 degrees
Complementary angles
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Angles that add up to 180
Supplementary angles
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Angles that are congruent
Vertical angles
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Lines that never intersect
Parallel lines
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Lines that intersect and form 4 right angles
Perpendicular lines
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A simple closed figure whose sides are segments
Polygon
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A triangle with all congruent sides
Equilateral triangle
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A triangle with at least 2 congruent sides
Isosceles triangle
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A triangle with no congruent sides
Scalene triangle
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A 4 sided figure
Quadrilateral
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A quad
1 pair of parallel sides
Trapezoid
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A quad
opposite sides parallel
Parallelogram
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Quad(4 sides)
Opposite sides parallel
4 right angles
Rectangle
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A quad
opposite sides parallel
all sides congruent
Rhombus
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A 5 sided figure
Pentagon
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A 7 sided figure
Septagon
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A 10 sided figure
Decagon
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Angles in a triangle add up to ___
180 degrees
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Angles in a quadrilateral(quad) add up to ___ _______
360 degrees
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A ___ angle is formed by joining 2 points on a circle to the center
Central
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The ___ of a triangle is a perpendicular segment from one vertex of a triangle to the opposite side
Altitude
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A _____ divides something into 2 equal parts
Bisector
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A ____ connects 2 nonadjacent vertices of a polygon
Diagonal
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4 sides
Opposite sides parallel
4 right angles
All sides congruent
Square
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