geometry Flashcards
(26 cards)
What is the definition of a point in geometry?
A point is a location in space that has no size or dimension.
True or False: A line segment has two endpoints.
True
Fill in the blank: A ______ is a flat surface that extends infinitely in all directions.
plane
What do you call the distance around a circle?
circumference
What is the formula for the area of a rectangle?
Area = length × width
True or False: A triangle can have more than one obtuse angle.
False
What is the sum of the interior angles of a triangle?
180 degrees
Multiple Choice: Which of the following is a type of triangle based on its sides? A) Equilateral B) Scalene C) Isosceles D) All of the above
D) All of the above
What is a polygon with eight sides called?
octagon
Fill in the blank: A ______ is a three-dimensional shape with a circular base and a single vertex.
cone
What is the Pythagorean theorem?
a² + b² = c², where c is the hypotenuse of a right triangle.
True or False: All rectangles are squares.
False
What is the formula for the volume of a cylinder?
Volume = πr²h
Multiple Choice: What type of angle measures more than 90 degrees but less than 180 degrees? A) Acute B) Right C) Obtuse D) Straight
C) Obtuse
What term describes lines that never intersect?
parallel lines
Fill in the blank: The ______ of a triangle is the longest side opposite the largest angle.
hypotenuse
What is the name of a polygon with five sides?
pentagon
True or False: A rhombus is a type of parallelogram.
True
What is the formula for the area of a circle?
Area = πr²
What is the term for a line that intersects another line at a right angle?
perpendicular line
Multiple Choice: Which of the following shapes has four equal sides and four right angles? A) Rectangle B) Rhombus C) Square D) Trapezoid
C) Square
What is the term for the distance from the center of a circle to any point on its circumference?
radius
Fill in the blank: The ______ of a shape is the amount of space it occupies.
area
What is the name of a triangle with one angle measuring more than 90 degrees?
obtuse triangle