Chapter 4.2 Flashcards
(7 cards)
1
Q
Exterior angle
A
Angles adjacent to the interior angles
2
Q
Theorem 4.2 – triangle sum theorem
A
The sum of the measures of the interior angles of a triangle is 180°
3
Q
Theorem 4.3–3rd angles theorem
A
If two angles of one triangle are congruent to two angles of a second triangle, then the third angles are also congruent
4
Q
Theorem 4.4
A
The acute angles of a right triangle are complementary
5
Q
Theorem 4.5 - exterior angles theorem
A
The measure of an exterior angle of a triangle is equal to the sum of the measures of the two nonadjacent interior angles
6
Q
Serum 4.6 – exterior angles inequality theorem
A
The measure of an exterior angle of a triangle is greater than the measure of either of the two nonadjacent interior angles
7
Q
Interior angle
A
Original three sides of a triangle
