## Chapter 4

Section 4-1: Classifying Triangles

Classifying triangles by angle measure. acute, right, obtuse

Classifying triangles by side length. scalene, isosceles, equilateral

What you need to know before you start:

Videos. Watch as many as you need to.

Classifying triangles by angle measure. acute, right, obtuse

Classifying triangles by side length. scalene, isosceles, equilateral

What you need to know before you start:

- An acute angle measures between 0 and 90 degrees
- A right angle measures 90 degrees
- An obtuse angle measures between 90 and 180 degrees
- All the angles in a triangle add up to 180 degrees

Videos. Watch as many as you need to.

Section 4-1 Homework

HW 4-1 P. 219-221

#12-17 all, 18-38 evens and 21 For homework help

Extra Credit: #39

HW 4-1 P. 219-221

#12-17 all, 18-38 evens and 21 For homework help

Extra Credit: #39

Section 4-2: Angle Relationships in Triangles

Triangle Sum Theorem

Exterior Angle Theorem

What you need to know before you start

Videos

Watch as many as you need.

Triangle Sum Theorem

Exterior Angle Theorem

What you need to know before you start

- What the exterior and interior of a triangle is
- all the angles in a triangle must add up to 180 degrees

Videos

Watch as many as you need.

Section 4-2 Homework
HW 4-2 p. 227-230 #15-22 all 24-36 evens, 28 is extra credit Next take the 4-1 to 4-2 Quiz You must get at least a 70% to move on! |