unit one - vocab

Midpoint formula

M=\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)

Pythagorean theorem

a^2+b^2=c

Area of a circle

a=\pi r^2

Circumference of a circle

C=2\pi r

Area of a rectangle

A=bh

Area of a triangle

a=\frac12bh

Perpendicular lines

Line that intersect to form four right angles and congruent adjacent angles

Adjacent angels

Two angles that lie in the same plane and have a common vertex and a common side but o common interior point

Congruent

Same size and shape (used to compare objects) - \overline{AB}\overline{=}\overline{CD}

Vertical angles

Two nonadjacent angles formed by two intersecting lines

Supplementary angles

Two angels with measures that have a sum of 180º

Vertex

The shared endpoint of two lines

Angle

An angle is formed by two non-collinear rays that share a common end point

Ray

Sides of an angle and the part of a line with one endpoint

Angle bisector

A ray, segment, or line that divides an angle into two congruent

Complementary angles

Two angels with measures that have a sum of 90º

Linear pair

A pair of adjacent angles with oncoming sides that are opposite rays and add up to 180º

Equal

Same angle (used with numbers) - AB=CD

Nonsensical

Wrong

Area

The measure of the two-dimensional space taken up by a flat surface or closed figure

Perimeter

The. Total distance around the outside of a two-dimensional shape

Surface area

The total area that the outer surface of a three-dimensional object occupies

The amount of three-dimensional space that an object occupies or takes up

what is is (general)

Prism

Pyramid

Cylinder

Cone

Sphere

(Shape)

Triangular prism

Pentagonal prism

Rectangular prism

Rectangular pyramid

Pentagonal pyramid

Triangular pyramid