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A triangle with three angles less than 90 degrees.
Acute triangle
Four sided figure with four right angles and opposite sides parallel and congruent.
Rectangle or Square
More than 180 degrees.
Reflex angle
Any point that helps form an angle. It is created by the intersection of two lines, segments, rays or edges.
Vertex
If 90 degrees is right, and 180 degrees is straight, what is 360 degrees?
Circle
The type of triangle with one 90 degree angle and two congruent sides.
Right Isosceles triangle?
A four sided figure with adjacent sides congruent
Kite
90 degree angle.
Right angle?
The name for a pair of opposite angles that are created by two intersecting lines. The angles created are congruent to each other (Hint: Draw a picture)
Vertical angles
Draw a right equilateral triangle.
You can't do it
The type of triangle with one angle greater than 90 degrees.
Obtuse triangle
A four sided figure with one pair of parallel sides and one pair of congruent sides.
Isosceles Trapezoid
An angle less than 90 degrees.
Acute angle
Two angles who sum is 90 degrees
Complementary angles
How do you determine the sum of the interior angles of any polygon?
Subtract the number of sides by two and multiply by 180.
The type of triangle with no congruent sides or angles.
Scalene triangle
Has four sides, with opposite sides congruent and parallel as well as opposite angles congruent.
Parallelogram
An angle that is 180 degrees.
Straight angle
Two angles whose sum is 180 degrees.
Supplementary angles
Give the sum of the interior angles of a quadrilateral.
360 degrees