1. Triangles Unit 3 Review Material
Homework: Textbook P #1, 2, 6, 9, 11, 13, 14

2. Vocabulary Triangles Angles
Equilateral triangle: all sides and angles are congruent.
Isosceles triangle: has two congruent sides and two congruent angles.
Scalene triangle: has no congruent sides.
Acute: smaller than 90
Obtuse: larger than 90
Right: equal to 90

3. Pythagorean Theorem
The hypotenuse is the longest side in a right triangle.
The hypotenuse is always the side directly opposite the right angle.
The hypotenuse, or missing side measurements, can be found using the following formula: a b c

4. Congruent Angles Line 1 and 2 are parallel.3 4 5 6 7 8
Line 1
Line 2
Transversal: a line intersecting two parallel lines
Line 1 and 2 are parallel.
Alternate interior angles are congruent.
27 and 36
Alternate exterior angles are congruent.
18 and 45
Corresponding angles are congruent.
13 and 68
24 and 57
Opposite Angles are congruent.
16 and 38
25 and 47