1. Geom36Student.notebook October 18, 2011
3.6 Types of Triangles
scalene triangle a triangle in which NO two sides are congruent
isosceles triangle a triangle in which AT LEAST TWO sides are
congruent
equilateral triangle a triangle in which ALL sides are congruent
equiangular triangle a triangle in which ALL angles are
congruent
(label the triangle to fit the definition)
acute triangle a triangle in which ALL angles are acute
60 This is just one example.
50
70
obtuse triangle a triangle in which ONE of the angles is an
obtuse angle
angle measure greater than 90
1
2. Geom36Student.notebook October 18, 2011
right triangle a triangle in which ONE angle is a right angle
hypotenuse the side opposite the right angle in a right triangle
legs sides that form the right angle in a right triangle
hy
po
ten
us
e
leg
leg
Please read through the sample problems on p. 144.
HOMEWORK: p.145 #3,7,9,10
Due Monday
2
