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2D Shapes Vocab
Triangles
Parallel/Perpendicular
Quadrilaterals
Symmetry/Patterns
100
A line with an arrow on one end and an endpoint on the other.
What is a ray?
100
The two different ways triangles can be classified.
What is by side and by angle?
100
Two lines that are facing the same directions but never touch.
What are parallel lines?
100
The number of pairs of sides of equal length in a parallelogram.
What is two?
100
When a shape/symbol can be divided in half horizontally, vertically, or diagonally to create equal parts.
What is symmetry?
200
A line with two endpoints.
What is a line segment?
200
If classifying triangles by side, the triangle with three equal side lengths.
What is an equilateral triangle?
200
The number of pairs of parallel lines a trapezoid has.
What is one?
200
The attribute that makes a rectangle a special square.
What is two pairs of sides of equal length?
200
The number of lines of symmetry in a parallelogram.
What is zero?
300
An angle less than a right angle.
What is an acute angle?
300
A triangle with two sides that are equal.
What is an isosceles?
300
When two lines intersect forming a right angle.
What is a perpendicular line?
300
The two shapes a trapezoid can be classified as.
What is a trapezoid or quadrilateral?
300
The number of lines of symmetry in the letter O.
What is infinite!
400
An angle with 90 degrees that you will find in corners.
What is a right angle?
400
A triangle with one right angle.
What is a right triangle?
400
When two lines meet but do not form a perpendicular line.
What is intersecting?
400
The shape that can be a rectangle, parallelogram, or quadrilateral.
What is a rectangle?
400
A pattern that continues at least 3 times.
What is repeating?
500
An angle greater than a right angle but less than a straight angle.
What is an obtuse angle?
500
The number of right angles an obtuse triangle has.
What is zero?
500
The number of perpendicular lines a rectangle has.
What is four?
500
The shape that can be a square, rectangle, rhombus, parallelogram, and quadrilateral.
What is a square?
500
A pattern that increases by a certain number.
What is growing?