Classifying Angles
Angles that are less than 90 degrees
Acute
Triangles that have all sides equal
equilateral triangles
The little box in the corner of a triangle or any figure represents what?
A right angle
What is the missing angle of the supplementary angles x and 52?
128 degrees
Angles that are equal to 180 degrees
Straight angles
Triangles that have no equal sides
scalene triangles
What is the measure of each interior angle of an equilateral triangle?
60 degrees
If a complementary angle has an angle of 35 degrees, what is the amount of the missing angle?
55 degrees
Angles that are equal to 90 degrees
Right angles
Triangles that have two equal sides
isosceles triangles
3
If a triangle has the angles 2x, 50, and 80, what is the degrees of the unknown angle?
x = 25 degrees
The missing angle is 50 degrees. (2x) is (2 times 25)
Angles that are greater than 90 degrees but less than 180 degrees
Obtuse angles
Triangles that have three angles less than 90 degrees
acute triangles
Can a triangle have these angle measures?
30, 60, 90.
Yes they add up to 180.
What is the missing angle of the acute triangle with angle measures 75, 35, and x?
70 degress
The number of degrees total in a triangle
180 degrees
Triangles that have one angle greater than 90 degrees
obtuse triangles
Write down the 3 types of triangles by sides.
Scalene, Equilateral, Isosceles
What number(s) can be used to form one unique triangle with 9cm, and 15 cm?
7cm - 23cm
What are the 3 types of angles?
Acute, Obtuse, and Right.
Name the type of triangle that has angle measurements of 100, 40, 40?
isosceles
What's the missing angle?
60, 37, ?
83