Shapes
This 4 sided shape has ALL right angles and congruent sides.
What is 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
A shape that has 4 congruent sides, with 2 sets of parallel lines and congruent opposite interior angles.
What is a rhombus
This is the sum of the measure of ALL interior angles of a Triangle.
What is 180 Degrees
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
Parallel lines have this in reference to their slope.
What is the same slope?
Foil (x-7)(2x+5)
2x^2-9x-35
This shape that has two pairs of consecutive congruent sides.
A kite.
This is true about all Vertical Angles
What is the hypotenuse?
The longest side of a right triangle.
Double Jeopardy
Find the Area of a Regular Octagon with the side length of 4 centimeters. Round the the nearest tenth whenever needed.
Triple for n, s, a, central angle, & Area
Number of Sides: 8 Side Length:4
Apothem:4.8 Central Angle:45 Degree
What is the Area of 76.8 cm2
1) The circumference of a circle
2) The Area of a Circle
1) What is C= π*d or C= 2(π)*r?
2) What is A= π * r 2
A shape that has four sides.
A quadrilateral
What are the three ways to prove two triangles are congruent?
SAS, SSS, ASA (AA)
In a right triangle, one angle should be equal to____.
90 degrees
A Parallel line has been intersected by a transversal line.
1) These angles are supplementary.
2) These angles are gongruent
1) What are same side interior angles?
2) What is alternate interior angles?
What is true about corresponding angles?
They are congruent.
This shape has 4 sides. one pair of parallel lines, the remaining sides are congruent. This shape also features 2 pair of consecutive congruent angles
What is a 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?
Directed line segment DE has endpoints D(-4,-2) and E(1,8).
Point F divides line DE such that DF:FE is 2:3.
What are the coordinates of F?
F (-2,2)
What does the linear pair postulate state?
If two angles form a linear pair, then they are supplementary.