circles
This is the distance from the center of a circle to its outer edge.
What is the radius?
This is an angle that measures exactly 90 degrees.
What is a right angle?
This type of triangle has three sides of equal length.
What is an equilateral triangle?
In the standard Pythagorean theorem formula, a^2 + b^2 = c^2, this letter always represents the hypotenuse.
What is c?
This is the slope of a line that is perpendicular to a line with a slope of 4/5.
what is -5/4?
This is the specific term for the perimeter of a circle.
What is the circumference?
These lines lie in the same plane but never intersect.
What are parallel lines?
This theorem states that a^2 + b^2 = c^2 for right triangles.
What is the Pythagorean theorem?
The Pythagorean theorem can only be used to find the missing side lengths of this specific type of triangle.
What is a right triangle?
This formula uses the average of the x-coordinates and the average of the y-coordinates to find the exact middle of a line segment.
What is the midpoint formula?
This line segment connects two points on a circle and passes through the center.
What is the diameter?
Two angles whose sum is exactly 180 degrees are called this.
What are supplementary angles?
This is the sum of all interior angles in any triangle.
What is 180 degrees?
This is the length of the hypotenuse if the two shorter legs of a right triangle measure 3 and 4.
What is 5?
In the standard equation of a circle on a coordinate plane, (x-h)^2 + (y-k)^2 = r^2, these two variables represent the coordinates of the center point.
What are h and k?
This is a straight line that touches a circle at exactly one point.
What is a tangent line?
This term describes two lines that intersect to form right angles.
This type of triangle has two sides of equal length and one side that is different.
What is an isosceles triangle?
This is the length of the missing leg if the hypotenuse of a right triangle is 13 and one leg is 5.
What is 12?
This is the scale factor of a dilation centered at the origin that maps the point (3, -6) onto the image point (1, -2).
This is a region of a circle bounded by two radii and an arc, resembling a pizza slice.
What is a sector?
This is the specific name for non-adjacent angles formed by two intersecting lines.
What are vertical angles?
In a right triangle, it is the term for the side opposite the right angle.
What is an Hypotenuse?
A 15-foot ladder leans against a wall, reaching a window that is 12 feet high. This is how many feet the base of the ladder is from the wall.
What is 9 feet?
A line segment has an endpoint at (2, 5) and a midpoint at (6, 1). These are the coordinates of the other endpoint.
What is (10,-3)?