Chapter 3 review. Numbers 8-10

8. Q: Copy these line segments. Draw the

perpendicular bisectors using two different

methods. Measure the two parts of each

bisected line segment. Record each set of

measurements

A: For line segment "a)" I used the compass method, my bisector was at 3.6cm, my total length was around 7cm

For line segment "b)" I used the paper folding method, my total length was 8cm and the bisector was at 4cm

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9. Q: A support must be placed under the pool

table at its centre. Make a sketch of the

pool table. Draw the position of the

perpendicular support. Label the support

and label the measures of the table lengths

on each side of the support.

A: The perpendicular bisector is at 117 cm.

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10. Q: You draw a perpendicular bisector of

a 30-cm line segment. You then draw

a perpendicular bisector of one of the

bisected line segments

A:

a) the shortest length was 7.5cm

b) the shortest line segment compares to the original line as 1/4 of the entire length.

Chapter 3 Review 11-13

Draw the following angles. Draw the angle bisectors using 2 different methods. Measure two angles of each bisected angle. Record each set of angle measures.

11a) The angle is 36 degrees, cut the angle in half, and you should have 18 degrees for the result.

11b) The angle is 120 degrees, cut the angle in half, and you should have 60 degrees for the result.

An architect measures the angle of a roof to be 132 degrees. Draw the angle.

12a) 66 degrees

You construct an angle bisector of an 80 degree angle. You then construct an angle bisector of one of the resulting angles.

13a) 20 degrees
12b) 1 fourth of the original angle