7th Grade Angles, area, perimeter, circles, Pythagorean theorem Flashcards
(19 cards)
Adjacent angles are?
Right next to each other
Vertical angles are?
across from each other and equal
complimentary angles are?
2 angles that equal 90 degrees
supplementary angles are?
2 angles that equal 180 degrees
The 3 angles in every triangle add up to how many degrees?
180 degrees
Formula for area of a triangle is…
A = base times height divided by 2
Formula for area of a trapezoid is…
A = (b1+b2) x height divided by 2
Formula for area of a circle is…
A = pi times radius squared
Formula for circumference of a circle is….
C = pi times diameter
What is the Pythagorean Theorem formula?
a^2 + b^2 = c^2
Formula for area of a rectangle is…
A = length times width
Formula for area of a parallelogram is..
A = base times height
An acute angle is….
less than 90 degrees
An obtuse angle is…..
more than 90 degrees
A right angle is…..
exactly 90 degrees
A straight angle is…..
exactly 180 degrees
The longest side of a right triangle is called….
the hypotenuse
The radius is what of the diameter?
half of the diameter
The diameter is what of the radius?
twice the radius
