Angles that are less than 90 degrees
Acute Angles
Triangles that have all sides equal
What is equilateral triangles
The little box in the corner of a triangle or any figure represents what?
What is a right angle?
The Exterior Angle Theorem states that the exterior angle is equal to what?
The sum of the two remote interior angles.
Find the midpoint between C(4,1) and D(6,-5).
M(5,-2)
Angles that are in the same position, same side of the transversal but in different groups. (one interior, one exterior)
Ángulos que están en la misma posición, mismo lado de la transversal pero en diferentes grupos. (uno interior, otro exterior)
What are corresponding angles?
Que son ángulos correspondientes?
The lengths of 2 sides of a triangle are 10 inches and 5 feet. What is the range of possible lengths for the third side?
10-5 > x < 10 + 5
5 > x < 15
Angles that are equal to 180 degrees
What is straight angles
Triangles that have no equal sides
What is scalene triangles
What is the measure of the interior angles of an equilateral triangle?
60 degrees
Find the exterior angle when the two interior angles are 73 and 58.
131
Find the distance between and B(0,-5) and E(0,-4).
1
Find x so that l ll m. State the what type of angles used.

What is x = 17 and Consecutive Interior Angles
The lengths of 2 sides of a triangle are 5 feet and 8 feet. What is the range of possible lengths for the third side?
8-5 < x >8+5
3 < x > 13
Angles that are equal to 90 degrees
What is right angles
Triangles that have two equal sides
What is isosceles triangles
Two interior angle measures of a triangle are 74 degrees and 53 degrees. What is the measure of the third interior angle?
53 degrees
Solve for x.
x = 49
Find the midpoint between R(1,2) and T(-1,-2).
M(0,0)
Are the lines parallel, perpendicular, or neither?
10x + 5y = -5 and y = -2x + 6
What is parallel?
Triangle with sides 9, 12, and 15
YES! 9 + 12 = 21 which is greater than 15.
This is also a multiple of a 3-4-5 right triangle (x3)
Angles that are greater than 90 degrees but less than 180 degrees
What is obtuse angles
Triangles that have three angles less than 90 degrees
What is acute triangles
Can a triangle have these interior angle measures? Why or why not? 36.9 degrees, 110.4 degrees, and 33.7 degrees
No, they do not have a sum of 180 degrees.
Solve for x.
x = 12
Find the missing endpoint Z given the midpoint M(4,1) and endpoint Y(1,-3).
Z(7,5)
Angles outside the two lines that are on the opposite side of the transversal.
What are alternate exterior angles?
In the Pythagorean theorem a2 + b2 = c2, what is "c" called?
The Hypotenuse
The number of degrees in a triangle
What is 180 degrees
Triangles that have one angle greater than 90 degrees
What is obtuse triangles
Find x
12
What is the measurement of angle B? 
<B = 39o
Find the distance between A(-3,7) and B(0,-5).
sqrt153
Lines that do not intersect, and are not coplanar
What are skew lines?
Triangle with sides 28, 100, and 71
NO! 28 + 71 = 99, which is less than 100