Definition List
- Acute triangle
- - is a triangle with all three angles less than 90 degrees.
- Altitude
- - An altitude of a triangle is a line segment connecting a vertex to the line containing the opposite side and perpendicular to that side.
- Angle bisector
- - An angle bisector is a ray that cuts the angle exactly in half, making two equal angles.
- Central angle
- - A central angle is an angle with its vertex at the center of a circle.
- Circumcenter
- - The circumcenter of a triangle is the point where the three perpendicular bisectors meet. This point is the same distance from each of the three vertices of the triangles.
- Diameter
- - A circle's diameter is a segment that passes through the center and has its endpoints on the circle.
- Equilateral triangle
- - An equilateral triangle is a triangle with three equal sides.
- Hypotenuse
- - The hypotenuse in a right triangle is the side of the triangle that is opposite to the right angle.
- Inscribed angle
- - An inscribed angle is an angle whose vertex is on a circle and whose rays intersect the circle.
- Kite
- - A kite is a quadrilateral that has two pairs of adjacent sides congruent (the same length).