Angles
Triangles
Quadrilaterals
Lines
Polygons
100
An angle that measures 90 degrees
What is a right angle?
100
A triangle with one right angle
What is a right triangle?
100
A quadrilateral with 2 sets of parallel lines
What is a parallelogram?
100
A set of lines that cross paths
What is intersecting lines?
100
The total measure of all the angles in a triangle
What is 180 degrees?
200
An angle larger than 90 degrees
What is an obtuse angle?
200
A triangle with one angle greater than 90 degrees
What is an obtuse triangle?
200
A rectangle with 4 equal sides
What is a square?
200
A set of lines that lie in the same plane and never cross paths
What is parallel lines?
200
The total measure of all the angles of a quadrilateral
What is 360 degrees?
300
An angle that measures less than 90 degrees
What is an acute angle?
300
A triangle with all sides equal
What is an equilateral triangle?
300
The sum of each angle in a rectangle
What is 90 degrees?
300
A set of lines that form right angles when they cross paths
What is perpendicular lines?
300
A polygon with 5 sides
What is a pentagon?
400
The measure of a straight angle
What is 180 degrees?
400
A triangle with 2 equal sides and 2 equal angles
What is an isosceles triangle?
400
A parallelogram with 4 equal sides and no right angles
What is a rhombus?
400
A set of lines that are not intersecting or parallel, and lie in different planes
What is skew lines?
400
A polygon with eight sides
What is an octagon?
500
Two or more angles that make a right angle
What is complementary angles?
500
A triangle with no equal sides?
What is a scalene triangle?
500
A quadrilateral with only one pair of parallel lines
What is a trapezoid?
500
A line that has an endpoint and continues in only one direction
What is a ray?
500
A polygon with ten sides
What is a decagon?
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