Lines
Touches a circle at one point
What is a tangent?
Connects the center of a circle and a point on the circle.
What is a radius?
The vertex of this angle is on the center of the circle.
What is a central angle?
This quadrilateral has one set of parallel sides.
What is a trapezoid?
The area of a square
What is side squared?
Contains a chord and does not pass through the center of a circle
What is a secant?
Connects two points on a circle without passing through the center
What is a chord?
The vertex of this angle is on the circle
What is an inscribed angle?
This quadrilateral has two sets of consecutive congruent sides.
What is a kite?
The area of a parallelogram
What is base times height?
Measures 180 degrees
What is a straight angle?
This segment in a triangle is opposite the right angle.
What is a hypotenuse?
This angle is created by two lines that intersect neither on the circle or on the center of the circle.
What are secant angles?
This quadrilateral is equilateral and equiangular.
What is a square?
One half the product of two diagonals
What is the area of a kite?
A reflection folds over this
What is an axis of symmetry? (or a line of symmetry)
Connects two nonadjacent vertices of a polygon
What is a diagonal?
These angles are congruent in a parallelogram
What are opposite angles?
This parallelogram is equiangular.
What is a rectangle?
This formula is often confused with the area of a circle
What is 2 pi r?
This is the equation of the y-axis on a coordinate plane
What is x=0?
Connects a point of tangency to a point exterior to the circle
What is a tangent segment?
These angles supplementary in a parallelogram
What are adjacent angles?
This specific quadrilateral has one set of parallel sides and no other regular attributes
What is a scalene trapezoid?
To calculate the area of a non-right triangle, you must know the measure of this segment.
What is an altitude?