quadrilateral
چهار ضلعی
A quadrilateral is a four-sided figure. The square, rectangle, rhombus, trapezoid, kite, and parallelogram are quadrilaterals

quotient
خارج قسمت
The quotient is the answer in long division. The dividend divided by the divisor is the quotient (plus a remainder)

radius
شعاع
The radius is the distance from the center of a circle (or a sphere) to the edge

1/2

ratio
نسبت
A ratio is the relationship between two numbers, as defined by the result you get when you divide one by the other

rectangle
مستطیل
A rectangle is a four-sided figure whose sides are at right angles to each other

remainder
باقی مانده
The remainder is the fractional part of the answer in long division. The dividend divided by the divisor is the quotient plus the remainder

rhombus
متوازی الاضلاع
A rhombus is a parallelogram with equal-length sides

right angle
زاویه قائمه
A right angle looks like the corner of a square; it extends ninety degrees

right triangle
مثلث قائم الزاویه

A right triangle has one angle that is a right angle (extending 90 degrees)

Roman numerals
اعداد رومی
Thousands of years ago, in ancient Rome, the Romans used a system of numbers that we call Roman numerals. In this system, I=1. V=5, X=10, L=50, C=100, D=500, and M=1,000

scalene triangle
مثلث مختلف الاضلاع
The sides of a scalene triangle are all different lengths

second
دومین
The second person or item comes after the first and before the third

semicircle
نیم دایره
A semicircle is half a circle

seven
هفت
There are seven days in the week

shapes
شکل
Everything has a shape

six
شش
Insects have six legs

sphere
کره
A sphere is a ball-shaped object

square
مربع
A square has four, equally long sides which are at right angles to each other

star
ستاره
A star is a shape that has many points

0=1-1

2=5-3

subtraction
تفریق
Subtraction is the operation of taking one number away from another