Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key

Practicing the Bridges in Mathematics Grade 4 Home Connections Answer Key Unit 5 Module 4 will help students analyze their level of preparation.

Bridges in Mathematics Grade 4 Home Connections Answer Key Unit 5 Module 4

Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Session 2 Answer Key

Clock Angles & Shape Sketches

Question 1.
Follow the directions below to construct an angle on each clock face. Use a ruler or a notecard to keep your lines straight. For each one, give the measure of the angle and explain how you know it’s that many degrees. (Hint: A circle measures 360°.)
a. Draw a line from the point above the 12 to the center of the clock and a line from the center to the point beside the 3.
Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key 1
Angle = _____________°
Here’s how I know:
Answer:
When a line is drawn above the 12 from the center of clock and a line from the center to the point beside the 3.Take the protractor and measure the angle, which gives us the Right angle 90° as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-1-1

b. Draw a line from the point above the 12 to the center of the clock and a line from the center to the point below the 6.
Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key 1
Angle = _____________°
Here’s how I know:
Answer:
When a line is drawn above the 12 from the center of clock and a line from the center to the point beside the 6.Take the protractor and measure the angle, which gives us the straight angle 180°  as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-1-2

c. Draw a line from the point above the 12 to the center of the clock and a line from the center to the point beside the 1.
Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key 1
Angle = _____________°
Here’s how I know:
Answer:
When a line is drawn above the 12 from the center of clock and a line from the center to the point beside the 1.Take the protractor and measure the angle, which gives us the acute angle 80° which is as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-1-3

d. Draw a line from the point above the 12 to the center of the clock and a line from the center to the point beside the 4.
Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key 1
Angle = _____________°
Here’s how I know:
Answer:
When a line is drawn above the 12 from the center of clock and a line from the center to the point beside the 4.Take the protractor and measure the angle, which gives us the acute angle 50 °  as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-1

Question 2.
Write instructions to a friend explaining how to sketch a 60° angle on a clock.
Answer:

Question 3.
Danny is learning to make a full turn of 360° on his skateboard. So far, he can make a turn of 270°. How many more degrees does he have to go to make a full turn? Use numbers and a labeled sketch to solve this problem.
Answer:
Number of degrees for making a full turn = 360°
till now he make number of turns = 270°
Number of runs he have to go for making a full turn = ?
= 360°-  270°
= 90°.

Question 4.
CHALLENGE Sketch the following if they are possible. If they are not possible, explain why they can’t be sketched.
a. a triangle with parallel sides
Answer:
A triangle with two parallel sides is as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-10

b. a trapezoid with two lines of symmetry
Answer:
A trapezoid is with two lines of symmetery is not possible , since it contain 4 unEqual sides. Hence single Line of Symmetry is possible but not two Lines as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-1.1.

c. a pentagon with two right angles
Answer:
A pentagon having 4 sidesd with two right angle as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-1.2.

Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Session 3 Answer Key

Unit 5 Review

Question 1.
Label each item in the box below. Use the words under the box to help you.
Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key 2
Answer:
Angle : A section of plane surrounded with two rays arssing at a similar point.
Point: An exact location in space.
Perpendicular Lines: A lines which bisects at ana angle of 90°.
Parallel Lines: A lines which are with similar distance.Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-2

Question 2.
Circle the polygons in the box below.
Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key 3
Answer:
Generall polygon is nothing but existing 3 or more sides. So, in the given figures the polygons are circled as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-3

Question 3.
Circle the polygons in the box below that have exactly one line of symmetry. Then draw in the line of symmetry on each polygon you circled.
Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key 4
Answer:
Trapezoid is the only polygon which only one line symmetry. Rest of them Equilateral Triangle having 3 lines of symmetery and the Rhombus having two lines of Symmetry. as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-4

Question 4.
A right angle measures 90°. A square has all right angles. Circle the correct word to make each statement true.
a. An acute angle measures more / less than 90°.
Answer:
An acute angle measures less than 90° but not more than 90°.

b. An obtuse angle measures more / less than 90°.
Answer:
An obtuse angle measures more than 90° but not less than90°.

Question 5.
Draw an example of the angle described in each box.
Bridges in Mathematics Grade 4 Home Connections Unit 5 Module 4 Answer Key 5
Answer:
Let us see the Example for an acute angle with 30 °, Right angle with 90 °and an angle that measure about 120° are as shown below.
Bridges-in-Mathematics-Grade-4-Home-Connections-Unit-5-Module-4-Answer-Key-5.

Story Problems

Show your work using numbers, labeled sketches, or words.

Question 6.
An ant walked around a rectangular garden. One side of the garden was 16 feet long. The other side was 23 feet long.
a. How far did the ant walk? (What was the perimeter of the garden?)
Answer:
one side of a rectangular garden = 16 feet
one side of a rectangular garden = 23 feet
Perimeter of garden = 2 ( l + w)
= 2 ( 16+ 23)
= 2 (39)
= 78 units.

b. What was the area of the garden?
Answer:
Area = 16 x 23
= 368 sq. units

Question 7.
CHALLENGE Clover is mowing her backyard. Her backyard is a rectangle. One side is 60 feet long and the other side is 25 feet long. It took Clover 30 minutes to mow half of her backyard. What is the area of the space that Clover mowed?
Answer:
Given Length of backyard = 60 feet
Width of backyard (w) = 25 feet
Area of backyard (A) = L X W
= 60 X 25
= 1500
Now clover mowed to half the Area of backyard = 1500 / 2
= 750 sq. ft

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