Math Vocabulary Flashcards
True or False: A right angle measures 90 degrees.
True
Fill in the blank: A ____ goes on forever in both directions.
line
What is a fraction?
A fraction represents a part of a whole, expressed as a numerator over a denominator.
Which shape is a 3D object: cube, circle, or triangle?
Cube
What do you call a triangle with all sides of different lengths?
Scalene triangle
True or False: A rectangle has four equal sides.
False
What is the term for lines that intersect at a right angle?
Perpendicular lines
What is the sum of angles in a triangle?
180 degrees
What is a 3D shape that has 6 faces, all rectangles?
Rectangular prism
Choose the correct term: A circle has no _____. (radius, corners, sides)
corners
True or False: A hexagon has 6 sides.
True
Which of the following is a type of angle: acute, obtuse, or both?
Both
What is an obtuse angle?
An angle that measures more than 90 degrees but less than 180 degrees.
Fill in the blank: A ____ is a flat shape that has length and width.
plane
What shape has 4 equal sides and 4 right angles?
Square
How many faces does a sphere have?
One curved face
What is the term for the distance around a shape?
Perimeter
True or False: A parallelogram has opposite sides that are equal in length.
True
What is a line segment?
A part of a line that has two endpoints.
Fill in the blank: The numerator is the number ____ the fraction line.
above
What do you call a 3D shape with a circular base and a pointed top?
Cone
What is the difference between a square and a rectangle?
A square has all sides equal, while a rectangle has opposite sides equal.
What kind of angle is this?
Obtuse angle. Obtuse angles are greater than 90 degrees and less than 180 degrees,
What kind of angle is this?
Right angle. Right angles are exactly 90 degrees.
What kind of angle is this?
Acute angle. Acute angles are less than 90 degrees.
What kind of angle is this?
Straight angle. Straight angles are exactly 180 degrees.
What type of line are these?
Parallel. Parallel lines never touch or cross paths.
What type of line are these?
Perpendicular. Perpendicular lines are lines that cross to make right angles (90 degrees).
What type of line are these?
Intersecting. Intersecting lines cross but do not cross to make right angles.
