Section 7.3 Triangles
287
Tell whether x and y show direct variation. Explain your reasoning.
If so, fi nd the constant of proportionality.
(Section 5.6)
28.
x = 2y
29.
y − x = 6
30.
xy = 5
31.
MULTIPLE CHOICE A savings account earns 6% simple interest per year. The
principal is $800. What is the balance after 18 months?
(Section 6.7)
○
A
$864
○
B
$872
○
C
$1664
○
D
$7200
Draw a triangle with the given angle measures. Then classify the triangle.
14.
15°, 75°, 90°
15.
20°, 60°, 100°
16.
30°, 30°, 120°
Draw a triangle with the given description.
17.
a triangle with a 2-inch side and a 3-inch side that meet at a 40° angle
18.
a triangle with a 45° angle connected to a 60° angle by an 8-centimeter side
19.
an acute scalene triangle
20. LOGIC You are constructing a triangle. You draw
90
90
80
100
70
110
60
120
50
130
40
140
30
150
20
160
10
170
0
180
100
80
110
70
120
6
0
13
0
5
0
140
40
150
30
160
20
170
10
180
0
35í
the fi rst angle, as shown. Your friend says that you
must be constructing an acute triangle. Is your
friend correct? Explain your reasoning.
Determine whether you can construct many, one, or no triangle(s)
with the given description. Explain your reasoning.
21.
a triangle with angle measures of 50°, 70°, and 100°
22.
a triangle with one angle measure of 60° and one 4-centimeter side
23.
a scalene triangle with a 3-centimeter side and a 7-centimeter side
24.
an isosceles triangle with two 4-inch sides that meet at an 80° angle
25.
an isosceles triangle with two 2-inch sides and one 5-inch side
26.
a right triangle with three congruent sides
27.
Consider the three isosceles triangles.
xí
50í
65í
130í
25í
xí
45í
xí
a.
Find the value of x for each triangle.
b.
What do you notice about the angle measures of each triangle?
c.
Write a rule about the angle measures of an isosceles triangle.
22
33
mms_red pe_0703.indd 287s_red pe_0703.indd 287
22/2/15 8:25:40 AM/2/15 8:25:40 AM
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Place Order” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.