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
Simplify n-3n+5n
3n
What is the shape that has 4 congruent sides?
A rhombus
What is true about vertical angles?
They are always congruent.
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 formula to find the measure of each angle in a regular polygon?
180(n-2)/n
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?
ASA, SAS, SSS
In a right triangle, one angle should be equal to____.
90 degrees
What is true about corresponding angles?
They are congruent.
Draw a shape that has 4 sides and only 1 pair of parallel sides.
Picture of Trapezoid
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?
(pir^2h)/3
What does the linear pair Theorem state?
If two angles form a linear pair, then they are supplementary.