Shapes
What shape has all right angles and congruent sides?
A square
What angles do perpendicular lines create?
90 degrees or right angles
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 triangle.
(base * height)/2
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 trigonometry ratio uses the adjacent side and the hypotenuse?
cosine
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 five ways to prove two triangles are congruent?
ASA, SAS, SSS, AAS, HL
In a right triangle, one angle should be equal to____.
90 degrees
When parallel lines are intersected by a transversal these angles are supplementary.
same side interior angles or linear pairs
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 a trapezoid
Name the type of angles that create a straight line.
supplementary
Use this to find the missing side of a right triangle when two side lengths are known.
What is the Pythagorean Theorem?
What is the formula to find the area of a circle?
Area = pi * radius squared
What is the Reflexive Property?
When a shape is congruent to itself.