Shapes
What shape has all right angles and congruent sides?
A square
If the central angle of a circle is 70 degrees, the intercepted arc is how big?
70 degrees
What are the side lengths of a 45-45-90 triangle?
The legs are the same length and the hypotenuse is the leg length times the square root of 2.
What is true about the slopes of perpendicular lines?
They are opposite reciprocals
This is used to find the interior angle sum of a polygon.
What is (n-2)180 ?
What is the shape that has 4 congruent sides?
A rhombus
What are the three trigonometric functions?
Sine, cosine, and tangent
What are the side lengths of a 30-60-90 triangle?
The hypotenuse is twice as long as the shortest side and the medium side is the short side times the square root of 3.
x, 2x, x times square root of 3
The area of a circle.
What is pi x r squared?
A shape that has two pairs of consecutive congruent sides.
A kite.
What do all the angles in a triangle add up to be?
180 degrees
What is the hypotenuse?
The longest side of a right triangle.
What is the volume formula for a cylinder?
V=Bh or V=pi*r^2*h
The circumference of a circle
What is pi X d or 2(pi)r?
A shape that has four sides.
A quadrilateral
What are the three ways to prove two triangles are congruent/similar?
AA, SAS, SSS
In a right triangle, one angle should be equal to____.
90 degrees
This is used to find the interior angle measure of a regular polygon.
What is (n-2)180/n?
What 3D shape do you get if you rotate a rectangle around one of its sides?
A cylinder
If an inscribed angle is 40 degrees, how big is the intercepted arc?
80 degrees
Use this to find the missing side of a right triangle when two side lengths are known.
What is the Pythagorean Theorem?
What are the four methods for indirect measure?
Shadow method, mirror method, hypsometer, and clinometer
What do all the exterior angles of a polygon add up to?
360 degrees