Classifying Angles
Angles that are less than 90 degrees
What is acute angles?
A triangle that have exactly 2 equal angles.
What is isosceles triangle?
Supplementary angles: <1 = 60 degrees. What is the measure of the second angle?
What is 120 degrees?
The name given to two angles with a sum of 180 degrees?
What is supplementary angles?
Angles that are greater than 90 degrees but less than 180 degrees
What is obtuse angles?
the sum of exterior angles of polygons
What is 360 degrees?
Complementary angles: <1 = 60 degrees. What is the measure of the second angle?
What is 30 degrees?
The name given to two angles with a sum of 90 degrees.
What is complementary angles?
Angles that are equal to 90 degrees
What is right angles?
The formula for sum of interior angles of a polygon
What is (n-2)180 ?
The little box in the corner of a triangle or figure.
What is a right angle?
Triangle ABC: <a = 50 degrees, <b = 70 degrees. What is the measurement of <c?
What is 60 degrees?
Angles that are equal to 180 degrees
What is straight angles?
OR What is a line?
A polygon whose interior angles add up to 900.
What is a heptagon?
What we need in order to claim angle relationships (vertical, alt. int. etc)
Parallel Lines
If a triangle has 2 congruent angles, then the triangles are similar because all 3 angles are congruent.
Angle Angle (AA) Theorem