sat math 2

perimeter (n)

the distance around a shape

area (n)

the space inside a shape

angle (n)

the space between two lines or rays

right angle (n)

an angle that measures 90 degrees

acute angle (n)

an angle less than 90 degrees

obtuse angle (n)

an angle greater than 90 degrees

triangle (n)

a polygon with 3 sides

square (n)

a quadrilateral with four equal sides and angles

rectangle (n)

a quadrilateral with four right angles

trapezoid (n)

a quadrilateral with one pair of parallel sides

parallelogram (n)

a quadrilateral with two pairs of parallel sides

rhombus (n)

a parallelogram with four equal sides

polygon (n)

a closed figure with straight sides

diagonal (n)

a line segment connecting non-adjacent vertices

parallel (adj)

lines that never meet

perpendicular (adj)

lines that intersect at 90 degrees

base (n)

the bottom of a shape

height (n)

the distance from base to top

midpoint (n)

the point halfway between two endpoints

bisect (v)

to divide into two equal parts

circle (n)

a round shape with all points equidistant from the center

radius (n)

the distance from the center to the edge of a circle

diameter (n)

a line passing through the center of the circle

circumference (n)

the distance around a circle

chord (n)

a line segment joining two points on a circle

arc (n)

a part of the circle’s circumference

sector (n)

a region bounded by two radii and an arc

central angle (n)

an angle whose vertex is the center of a circle

inscribed angle (n)

an angle with its vertex on the circle

tangent (n)

a line that touches the circle at one point

secant (n)

a line that intersects a circle at two points

circumscribed circle (n)

a circle that passes through all vertices of a polygon

inscribed circle (n)

a circle that touches all sides of a polygon from the inside

π (pi) (symbol)

the ratio of circumference to diameter (≈3.14)

prism (n)

a solid with two parallel, congruent polygon bases

pyramid (n)

a solid with a polygon base and triangular sides

cylinder (n)

a solid with two circular bases

cone (n)

a solid with one circular base and a vertex

sphere (n)

a perfectly round 3D shape like a ball

face (n)

a flat surface on a 3D shape

edge (n)

the line where two faces meet

vertex (n)

the corner point where edges meet

net (n)

a 2D pattern that folds into a 3D shape

cross section (n)

the shape made by cutting through a solid