Introduction to silmilar triangles.

1. How Many Triangles Do You See?
Counting Triangles

2. Mental Math
Find the unit rate of speed for
each of the following 3 questions:
48
(7) Find 75% of 64
(1) 32 km in 10 hours 3.2 km/hr
(8) You found a cheque from your
(2) 21 km in 1/4 hours 84 km/hr
grandparents for your birthday from
2 years ago. Can you still cash it?
(3) 88 km in 5 hours 4.4 km/hr
No
Find the unit cost of each of
the following 2 questions: (9) You have the following coins:
3 loonies, 2 toonies, 12 dimes, 8
30¢ each
(4) 6 oranges for $1.80 nickels and 4 pennies. How much
money is that in dollars and cents?
(5) 12 cans of soda for $6.00 50¢ each $8.64
(6) Find 75% of 40 506
(10) What is 46 x 11?
30

3. Represent a rectangular room measuring 12 feet by 24 feet with a scale drawing.
Use a scale of 1 inch representing 2 feet.

4. CONGRUENT
Triangles
How are they different?
How are these triangles the same?
the angles the length of the sides have lower case letters
on the left triangle and on the right they have
the length of the sides upper case letters
the vertices have the same names the right takes two letters to describe the length
and the left takes one to describe the length.

5. State the measure of each of the following:
d = ______ e = ______ 9 cm c = ______ 15 cm
18 cm
C = ______ D = ______ E = ______
56° 94° 30°
CE = ______ 18 cm CD = ______ 9 cm DE = ______ 15 cm