ANGLES
TRIANGLES
VOCABULARY
100

An angle that measures less than 90 degrees.

an acute angle

100

Triangle in which none of the sides are the same

scalene

100

A vertex

the point where 2 rays meet in an angle

200

An angle that is exactly 90 degrees.

a right angle

200

triangle with two sides the same

isosceles

200

Inverse of addition

subtraction

300

A tool used to measure angels.

a protractor

300

Triangle in which all sides are the same

equilateral

300

Inverse of mutliplication

division

400

A reflex angle

an angle that is more than 180 degrees but less than 360 degrees

400

Type of triangle with ONE obtuse angle

obtuse angle

400

inverse means

opposite

500

An angle measuring 360 degrees.

a complete angle

500

A triangle with one right angle

a right triangle

500

A variable

What is a letter that stands for a number in a math equation?