truth or false
find the measure of a supplement
of /_2
classification of angle by degrees
Vocab
100
Complementary angles must be acute.
true
100
m2 = 78°
102°
100
162 o
Obtuse
100
acute angle
An angle is less than 90 degrees, but more than 0 degrees
200
Supplementary angles must be obtuse.
false
200
m2 = 1°
179°
200
114 o
obtuse
200
Two adjacent angles that form a straight line.
a linear pair
300
Two acute angles can be supplementary.
false
300
m2 = 155°
25°
300
180 o
Straight
300
Three interior angles of a triangle add to 180 degrees.
Triangle Interior Angle Sum Theorem?
400
A pair of vertical angles can be complementary.
true
400
m2 = 130°
50°
400
75o
acute
400
The exterior angle of a triangle is equal to the sum of the two remote interior angles of the same triangle.
Exterior Angle Theorem
500
The intersection of two rays creates two pairs of vertical angles and four pairs of supplementary angles.
True
500
m2 = 60°
120°
500
90o
right
500
A line from one vertex of a triangle to the midpoint of the opposite side of the triangle.
a median
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