Angles
(Not to be confused with angels)
(Not to be confused with angels)
This angle is less than 90 degrees but definitely more than 0 degrees
What is an acute angle?
A straight line from the center to the perimeter of the circle
What is a radius?
This is a polygon of four sides
What is a quadrilateral?
This is a triangle in which all sides and angles are equal
What is an equilateral triangle?
He is often considered the Father of Geometry
Who is Euclid?
An angle between 90 and 180 degrees
What is an obtuse angle?
This is the length of a straight line through the center of the circle
What is a diameter?
A polygon with all sides and angles equal
What is a regular polygon?
This triangle is one with two equal sides
What is an isosceles triangle?
This theorem was developed to relate the three sides of a right triangle (Hint: It involves a, b, c)
What is the Pythagorean theorem?
Either of two equal and opposite angles formed by the intersection of two straight lines
What are vertical angles?
The length of the closed curve of a circle (also known as its perimeter)
What is the circumference?
This solid figure is bounded by plane polygons or faces
What is a polyhedron?
A triangle with no two sides of equal length
What is a scalene triangle?
This famous mathematician contributed the idea of determining volumes of objects with irregular shapes in geometry
Who is Archimedes of Syracuse?
Two angles whose sum is a right triangle (90 degrees)
What are complementary angles?
This is known as the ratio of the circumference of a circle to its diameter (Hint: We celebrate it on March 14th)
What is Pi?
A polyhedron with two congruent and parallel faces
What is a prism?
This is known as the line segment extending from any vertex of a triangle perpendicular to the line containing the opposite side
What is the altitude of a triangle?
Two quantities are in this if their ratio is the same as the ratio of their sum to the larger of the two quantities
What is the golden ratio?
Two angles whose sum is a straight angle (180 degrees)
What are supplementary angles?
This is the amount of space enclosed in a circle
What is the area of a circle?
This is known as the extent of a 2-dimensional surface enclosed within a boundary
What is surface area?
This branch of study studies the relationships between the side lengths and angles of triangles
What is trigonometry?
These include Euclidean, Analytic, Projective, Differential, Topology, and Non-Euclidean