Points, Lines, and Planes
A location in space with no size.
What is a point?
An angle that measures less than 90 degrees.
What is an acute angle?
The formula used to find the middle of a segment.
What is the midpoint formula?
A line that crosses two or more other lines.
What is a transversal?
Figures with the same shape but not necessarily the same size.
What are similar figures?
A flat surface that extends infinitely in all directions.
What is a plane?
A triangle with three equal sides.
What is an equilateral triangle?
The formula that uses a square root to find the space between two points.
What is the distance formula?
Angles that are opposite each other when two lines cross.
What are vertical angles?
The relationship of side lengths in similar triangles.
What are proportional?
Points that lie on the same straight path.
What are collinear points?
An angle that measures exactly 90 degrees.
What is a right angle?
The formula: ½ × base × height.
What is the area of a triangle?
Angles on the same side of the transversal and inside the parallel lines.
What are same-side interior angles?
The trigonometric ratio that compares opposite side to hypotenuse.
What is sine?
Part of a line with two endpoints.
What is a line segment?
A triangle with all sides of different lengths.
What is a scalene triangle?
The total length around a shape.
What is perimeter?
Angles on opposite sides of a transversal and inside parallel lines.
What are alternate interior angles?
The ratio of opposite side to adjacent side in a right triangle.
What is tangent?
Points that lie on the same flat surface.
What are coplanar points?
The common endpoint of the sides of an angle.
What is a vertex?
A pair of numbers used to name a point on a graph.
What are coordinates?
Angles in the same position on different intersections.
What are corresponding angles?
The side of a right triangle that is opposite the right angle.
What is the hypotenuse?