points and lines
what is used to represent a point
A dot
What is the formula for area of a circle ?
A = Pi r squared
what are parallel lines ?
lines that don't intersect and have the same slope
a segment connecting two midpoints of two sides of a triangle
midsegment
What do you call two angles that equal 90 degrees
complementary
represented by two capital letters, with a double arrowhead on top
A line
What is the slope formula ?
y2 - y1 / x2 - x1
Angles that occupy the same position on parallel lines
corresponding angles
If point A divides a segment in two congruent parts, What is this point called ?
midpoint
What is the measurement of two congruent angles that are supplementary ?
90 and 90
How do we name a plane ?
Three capital letters denoting points
What is the Pythagorean Thm ?
a2 + b2 = c2
what is the notation for parallel lines
||
two segments with the same length are called what ?
congruent
Name four ways to show triangles are congruent.
ASA. SSS. AAS. SAS
what are points that lie on the same line ?
collinear point
What is the area of a rectangle ?
A = LW
Angles that are interior angles that lie on opposite sides of the transversal are?
Alternate Interior Angles
commonly called the center of gravity
centroid
To set up a shadow proportion, you must set up a proportion and use what ?
cross product
What type of lines make right angles ?
Perpendicular
What is the distance formula ?
square root of (x1 - x2)2 + ( y1 - y2 )2
What do you call a line that intersects two parallel lines ?
Transversal
Ray that cuts an angle in equal parts ?
And , what do we use to show this on figure ?
angle bisector , arcs
the longest side of a right triangle is called
hypotenuse