BASIC
ANGLES
POLYGONS
TRIANGLES
QUADRILATERAL
100
A part of a line with two endpoints
What is a line segment?
100
The common endpoint of the two rays or line segments in an angle
What is a vertex?
100
A polygon with 5 sides
What is a pentagon?
100
A triangle whose sides all have the same length
What is an equilateral triangle?
100
A quadrilateral with both pairs of opposite sides parallel
What is a parallelogram?
200
Part of a line that has one endpoint and extends forever in one direction
What is a ray?
200
An angle whose measure is 90 degrees
What is a right angle?
200
A polygon with 8 sides
What is an octagon?
200
A triangle in which one angle is an obtuse angle
What is an obtuse triangle?
200
A parallelogram with all sides the same length
What is a rhombus?
300
A straight path of points that goes on forever in two directions
What is a line?
300
An angle whose measure is between 90 and 180 degrees
What is an obtuse angle?
300
A polygon with 3 sides
What is a triangle?
300
A triangle in which no sides have the same length
What is a scalene triangle?
300
A parallelogram with four right angles
What is a rectangle?
400
Intersecting lines that intersect to form square corners or right angles
What are perpendicular lines?
400
An angle whose measure is between 0 and 90 degrees
What is an acute angle?
400
A polygon with 6 sides
What is a hexagon?
400
A triangle with two sides of the same length
What is an isosceles triangle?
400
A rectangle with all sides the same length
What is a square?
500
In a plane, lines that never cross and stay the same distance apart
What are parallel lines?
500
An angle measuring 180 degrees
What is a straight angle?
500
A polygon with 4 sides
What is a quadrilateral?
500
A triangle whose angles are all acute angles
What is an acute triangle?
500
A quadrilateral that has exactly one pair of parallel sides
What is a trapezoid?
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