WORKBOOK SAMPLER Chapter 7: Polygons - Nelson Education
WORKBOOK SAMPLER Chapter 7: Polygons - Nelson Education
WORKBOOK SAMPLER Chapter 7: Polygons - Nelson Education
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5. Which triangles in Question 3 match each description<br />
a) equilateral triangle: 2<br />
b) scalene triangle: 5<br />
c) obtuse triangle: 3 and 4<br />
d) regular polygon: 2<br />
6. a) Which two triangles in Question 3 are congruent 3 and 4<br />
b) Two angles in triangle 5 are complementary.<br />
What are the measures of these angles 658 and 258<br />
7. Use the marks on each shape. Fill in the blanks below.<br />
a) I J<br />
b) B C<br />
c) Q<br />
regular polygon<br />
a closed shape<br />
with all sides<br />
equal and all<br />
angles equal<br />
complementary<br />
angles<br />
two angles whose<br />
sum is 908<br />
R<br />
H<br />
K<br />
side HI 5 side<br />
side<br />
IJ<br />
5 side<br />
KJ<br />
HK<br />
8. a) The diagram below shows a transversal crossing two<br />
parallel lines. Record the angle measures on the diagram.<br />
Do not measure the angles.<br />
D<br />
/ DBC<br />
5 /<br />
DCB<br />
P<br />
S<br />
QR and PS are<br />
parallel .<br />
transversal<br />
a line that<br />
intersects two or<br />
more lines<br />
20°<br />
160°<br />
160°<br />
20°<br />
20°<br />
160°<br />
160°<br />
b) What are the measures of two opposite angles in the<br />
diagram<br />
e.g., 208 and 208 OR 1608 and 1608<br />
20°<br />
opposite angles<br />
non-adjacent<br />
angles that are<br />
formed by two<br />
intersecting lines<br />
c) What are the measures of two supplementary angles in<br />
the diagram 1608 and 208<br />
9. Dawn plans to install a ridge vent on a roof.<br />
This will cool the attic. The angle of the vent<br />
needs to equal /RST at the peak of the roof.<br />
Dawn knows the measurements in the diagram.<br />
a) What type of triangle is nRST<br />
e.g., isosceles<br />
b) What is the measure of /RST How do you know<br />
The measure of /RST is 1048. The sum of the angles<br />
R<br />
supplementary<br />
angles<br />
two angles whose<br />
sum is 1808<br />
30 ft 30 ft<br />
38°<br />
S<br />
38°<br />
T<br />
in any triangle is 1808. 1808 2 388 2 388 5 1048<br />
NEL<br />
NEL<br />
<strong>Chapter</strong> 7 <strong>Polygons</strong> 163<br />
<strong>Chapter</strong> 7 <strong>Polygons</strong><br />
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