There is one triangle in a triangle, so all of the triangles added together is 180°.

Rectangle/Square/Parallelogram

There is two triangles in a rectangle, so 180°+180°=360°. So, the area of all the angles in a rectangle is 360°.

There is three triangles in a pentagon, so 180°•3=540°. The area of all the angles in a pentagon is 540°.

There is four triangles in a hexagon, so 180°•4=720°. The area of

Upgrade to remove ads

Busy. Please wait.

Don't have an account? Sign up

taken

Age:

12 or younger
13 or older

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password

Enter the email address associated with your account, and we'll email you a link to reset your password.

Help

Options

focusNode

Didn't know it?
click below

Knew it?
click below

Don't Know

Remaining cards (0)

Know

retry

shuffle

restart

0:00

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Triangles

Triangles & triangulation

Term	Definition
Triangles	There is one triangle in a triangle, so all of the triangles added together is 180°.
Rectangle/Square/Parallelogram	There is two triangles in a rectangle, so 180°+180°=360°. So, the area of all the angles in a rectangle is 360°.
Pentagon	There is three triangles in a pentagon, so 180°•3=540°. The area of all the angles in a pentagon is 540°.
Hexagon	There is four triangles in a hexagon, so 180°•4=720°. The area of