Mathematics Concepts and Definitions

Front

Area of triangle

Back

(base × height) ÷ 2

Front

Area of parallelogram

Back

Base x Perpendicular height

Front

Place value

Back

Thousands, Hundreds, Tens, Units, Tenths, Hundredths

Front

Acute angle

Back

An angle between 0° and 90°

Front

Right angle

Back

90°

Front

Obtuse angle

Back

An angle between 90° and 180°

Front

Straight line

Back

180°

Front

Reflex angle

Back

An angle between 180° and 360°

Front

Full turn

Back

360°

Front

Mode

Back

most common