Upcoming SlideShare
×

# 4.1 terms

4,138 views

Published on

0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total views
4,138
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
28
0
Likes
0
Embeds 0
No embeds

No notes for slide

### 4.1 terms

1. 1. Terms of Endearment Triangles and Angles: 4.1
2. 2. Triangle <ul><li>Figure formed by 3 segments joining 3 non-collinear points </li></ul>
3. 3. Classification by Sides <ul><li>Equilateral Triangle </li></ul><ul><ul><li>3 congruent sides </li></ul></ul><ul><li>Isosceles Triangle </li></ul><ul><ul><li>At least 2 congruent sides </li></ul></ul><ul><li>Scalene Triangle </li></ul><ul><ul><li>No congruent sides </li></ul></ul>
4. 4. Classification by Angles <ul><li>Acute Triangle </li></ul><ul><ul><li>3 acute angles </li></ul></ul><ul><li>Equiangular Triangle </li></ul><ul><ul><li>3 congruent angles </li></ul></ul><ul><li>Right Triangle </li></ul><ul><ul><li>1 right angle </li></ul></ul><ul><li>Obtuse Triangle </li></ul><ul><ul><li>1 obtuse angle </li></ul></ul>
5. 5. Vertex <ul><li>Each of the 3 points joining the sides of a triangle </li></ul>
6. 6. Adjacent Sides <ul><li>Two sides sharing a common vertex </li></ul>
7. 7. Right Triangles <ul><li>Legs – Sides that form the right angle </li></ul><ul><li>Hypotenuse – Side opposite the right angle </li></ul>
8. 8. Isosceles Triangle <ul><li>Leg – the two congruent sides </li></ul><ul><li>Base – the third side (non-congruent) </li></ul>
9. 9. Interior Angles <ul><li>When the sides of the triangle are extended, the interior angles are the original angles (inside the triangle) </li></ul>
10. 10. Exterior Angles <ul><li>When the sides of a triangle are extended, the exterior angles are the angles adjacent to the interior angles (form a linear pair to the original angles) </li></ul>
11. 11. Triangle Sum Theorem <ul><li>The sum of the measures of the interior angles of a triangle is 180 degrees </li></ul>
12. 12. Exterior Angle Theorem <ul><li>The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles </li></ul>
13. 13. Corollary to a theorem <ul><li>Statement easily proven using the theorem </li></ul>
14. 14. Corollary to the Triangle Sum Theorem <ul><li>The acute angles of a right triangle are complementary </li></ul>