Proportions
Are they similar?
Solving Similar Triangles
Indirect Measurement
100
Solve the proportion.
x/12 = 3/4
x = 9
100
Are these triangles similar? Why or why not?
Yes! angle 85 and angle 43 in the first triangle are congruent to angle 85 and angle 43
100
Determine if the triangles are similar and solve for x.
Yes they are similar. x = 55
100
These triangles are similar. Find the value of x using indirect measurement.
x = 9
200
Solve the proportion
x/21 = 2/6
x = 7
200
Are these triangles similar? Why or why not?
Yes! 90 is congruent to 90, 60 is congruent to 60, and 30 is congruent to 30
200
Determine if these triangles are similar. Then solve for y.
No they are not similar! y = 52
200
Find the measure of x.
x = 12 cm
300
Solve the proportion.
9/x = 6/2
x = 3
300
Are these triangles similar? Why or why not?
No! There is only one pair of congruent angles (70 degrees)
300
These triangles are similar. Find the value of x
x = 50
300
The triangles are similar. Find the measure of b.
b = 4
400
Solve the proportion.
10/4 = 15/x
x = 6
400
Are these triangles similar? Why or why not?
Yes! 100 is congruent to 100, 45 is congruent to 45, and 35 is congruent to 35
400
These triangles are similar. Find the value of x.
x = 65
400
How tall is the flagpole?
51 feet