An angle that is less than 90 degrees is called a
What is an acute angle
This is the Midpoint Formula
What is (x1+x2)/2, (y1+y2)/2
This is the number of degrees in a straight angle
What is 180
This is the formula to find the interior angle sum of a polygon
What is (n-2)180
Name all pairs of supplementary angles
What is same side interior and same side exterior
This is the formula to find the area of a triangle
What is 1/2bh
Name all pairs of congruent angles
What is corresponding, vertical, alternate interior, and alternate exterior
This are the two formulas to find the circumference of a circle
What is pi*diameter and 2*pi*radius
If 3 angles in a triangle are 60 degrees, 80 degrees, and 3x+4 degrees, what is the value of x?
What is 12
You can find the measure of an exterior angle of a triangle by adding these
What is the 2 remote interior angles
This is the equation for point-slope form of a line
What is (y-y1)=m(x-x1)