students will explicitly define, use, and calculate exterior and interior angles of triangles
TRANSCRIPT
3-3 PARALLEL LINES AND THE TRIANGLE
SUM THEOREM
Students will explicitly define, use, and calculate
exterior and interior angles of triangles.
FINDING ANGLE MEASURES IN TRIANGLES
What kind of triangle is this?
ACUTE
What happens when you move all three angles together?
180o
1
2 3
2 3
FINDING ANGLE MEASURES IN TRIANGLES
What kind of triangle is this?
RIGHT
What happens when you move all three angles together?
180o
1
23
23
FINDING ANGLE MEASURES IN TRIANGLES
What kind of triangle is this?
Obtuse
What happens when you move all three angles together?
180o
1
2 3
2 3
3-5 QUIZ Use the following questions to assess yourself and see how well you understand today’s lesson.
Be sure to ask if you miss one and don’t know why!
Remember to record your score on your portfolio sheet.
1. FIND THE VALUE OF K. THE DIAGRAM IS NOT
TO SCALE.
62°
45° k °
A. 17B. 73C. 118D. 107
2. FIND THE VALUE OF X. THE DIAGRAM IS NOT TO SCALE.
A. 33B. 162C. 147D. 75
3. A TRIANGULAR PLAYGROUND HAS ANGLES WITH MEASURES IN THE RATIO 8 : 6 : 4. WHAT IS THE MEASURE OF THE SMALLEST ANGLE?
A. 30B. 40C. 5D. 20
4. THE FOLDING CHAIR HAS DIFFERENT SETTINGS THAT CHANGE THE ANGLES FORMED BY ITS PARTS. SUPPOSE M2 IS 26 AND M3 IS 70. FIND M1 . THE DIAGRAM IS NOT TO SCALE.
1
2
3
A. 96B. 106C. 116D. 86
5. FIND THE VALUE OF THE VARIABLE. THE DIAGRAM IS NOT TO SCALE.
114°
47°x°
A. 66B. 19C. 29D. 43
ASSIGNMENT3-5 p.175-177 #10-34 evenThen rate your assignment 4-3-2-1-0 as to how well you understood the lesson and write why you rated yourself that way.
You will need your compass MONDAY!!