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BASIC VOCABULARY
ANGLES
LINES
POLYGONS PT.1
POLYGONS PT.2
100
Congruent
same size, same shape
100
Name the four angles we have studied in class.
What is acute, right, obtuse, and straight?
100
Lines that never intersect
What are parallel lines?
100
Name the three ways to classify triangles by their sides.
What are scalene, isosceles, equilateral?
100
A parallelogram with four right angles and four congruent sides.
What is a square?
200
Three attributes of a polygon.
2D figure closed no curves flat line segments do not cross
200
The trapeziod has ____ acute angles.
What is 2?
200
Intersecting lines that form right angles
What are perpendicular lines?
200
A circle is a polygon. True or False. Explain why!
What is false?
200
A triangle with exactly two congruent sides.
What is isosceles?
300
Has an endpoint and continues infinitely in the opposite direction.
ray
300
The rectangle has _____ obtuse angles
What is 0?
300
Lines that intersect
What are intersecting lines?
300
A quadrilateral with exactly one pair of parallel lines.
What is a trapezoid?
300
A polygon with eight sides and eight angles.
What is an octagon?
400
Where two or more lines or line segments intersect
What is a vertex?
400
An obtuse triangle has ____ obtuse angles.
What is 1?
400
A straight line inside a shape that goes from one corner to another (but not an edge).
What is a diagonal line?
400
A two-dimensional figure with six sides and six angles.
What is a hexagon?
400
A parallelogram with all sides congruent
What is a rhombus?
500
A flat surface that continues infinitely in all directions.
What is a plane?
500
The types of angles in a right triangle.
1 right angle 2 acute angles
500
A part of a line between two endpoints
What is line segment?
500
Name the special shapes in the family of quadrilaterals.
What are square, rectangle, rhombus, parallelogram, kite, and trapezoid?
500
A parallelogram has ____ pairs of parallel lines.
What is 2?