Download SD 3.2 Design Challenge II drawing triangles

Math CC7/8 – Be Prepared
On Desk:
Learning Log:
1. Pencil
• HW: p. 76 #6,7,8,9 & Parent
2. Math Journal
sig. on Quiz Tracking Sheet
3. Learning Log • Pass back Quiz
– Quiz Retake: Mon. 9/26 in class
• SD Test Wed. 9/28
Picture Day –Tues. 9/27 during Math
Fundraiser – Keep selling!
Tasks for Today
• Pass back Quiz
– Tracking Sheet: Parent Sig. by Friday?
– Quiz Retake: Monday 9/26
• SD Lesson 3.2 A-D
• Begin HW?
Quiz Procedures
• Look at your score – add to LL
– Parent Signature on Quiz Tracking Sheet
prior to Quiz Retake
– Retakes:
• Must have parent sig. on Tracking Sheet
• Retake missed sections only
• Retake must be returned with 1st Quiz to
teacher before grade is adjusted
Launch video 3.2
These SSA won’t create a
unique triangle, but some
such combinations will.
AAA won’t make a congruent
triangle, the side lengths may
be different.(similar triangle)
AAS will make a unique triangle
because we know the third angle
must be 180-106 degrees. (ASA
situation)
Use labsheet 3.2B
• Draw an equilateral triangle
with sides 1 inch.
• Draw an angle of 60 degrees
and mark 2 sides of 1 inch
on the legs of that angle.
Then connect the end points.
• Draw a right triangle with
legs 1 inch and 1.25 inches.
• Draw an angle of 90 degrees
and mark sides of 1 in. and
1.25 in on the legs of that
angle. Then connect the end
points.
Use labsheet 3.2B
• You need to give either 2 sides
and the included angle, or 2
angles and the side.
• Angles = 30, 125, 25 degrees
• Sides = 1.25, 1.25, and 2.5
inches
• Draw an isosceles triangle
with vertex angle 40
degrees and equal sides
1.5 in long.
• Draw an isosceles triangle
with base 1 in. long and
base angles 70 degrees.
You need at least 3 sides and/or angle
measurements, but not ANY three.
• Given SSS - there will only be one triangle.
• Given 2 angles and one side length (either the
included side (ASA) or the nonincluded side
(AAS)), there will be only ONE triangle.
All copies of the right triangle using the same 3 sides
lengths will make the same triangle.
The order in which you connect the sides does NOT
matter. So, the copy will also be a right triangle.