Geometry Quiz 4.1-4.2
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Obtuse Triangle
1 obtuse angle
Right Triangle
1 right angle
Acute Triangle
3 acute angles
Equiangular Triangle
3 congruent angles
Equilateral Triangle
3 congruent sides
Triangle
A polygon with 3 sides
Isosceles triangle
At least two congruent sides
Scalene Triangle
No congruent sides
Corollary to the Triangle Sum Theorem
The acute angles of a right triangle are complementary
Theorem 4.2 Exterior Angle Theorem
The measure of an exterior angle of a triangle is equal to the sum of the measures of the two nonadjacent interior angles
Theorem 4.1 Triangle Sum Theorem
The sum of the measures of the interior angles of a triangle is 180
