Geometry Terms

acute angle

right angle

obtuse angle

reflex angle

unit circle, arc lenght, sector, central angle

right angled triangle

isoceles

equilateral

intercept or similarity

circum circle, perpendicular bisectors, circumcenter

angle bisector, incenter

median lines, centroid

square

rectangle

rhombus

parallelogram or rhomboid

Kite, diamond

trapezium or trapezoid

if b=d ?

isoceles trapezoid

pentagon regular

center, circle, circumfrence, area, diameter, radius

secant line and tangent line

cube, diagonal, edge, volume, surface area

ABDC ?

Face

Cuboid box, base

cylinder, mantel

pyramind, sland edge, vertex, Apex

oblique cone

frustum of pyramid

(regular) tetrahedom

Prism

“-3“

minus three

a billion

10^9

a/b

numerator/denominator = fraction

R

reell

Q

rational

Z

interger

N

positive interger

(…)

parentitis

{…}

bracket, set brackets

[…]

braces (square)

b = a^n

b equals to a to the power of n = n^th root of b equals to a

[2,5]

including 2 & 5, closed interval

]2,5[

excluding 2&5, open interval

2, 4, 6, 8

even

1, 3, 5, 7

odd

x * (2x + y)

expand

2x² + yx

fractionize

A

vertex, local minimum

C

x-intercept

rise, run

f

parabola

g

linear function

domain

range

“f(x) = x² - 2“

equation

q?

y-intercept

D?

cordinates