Classify Angles and Triangles
Angle Measures in a Triangle
Area, Perimeter, or Volume?
Decimal Computation
Prime and Composite Numbers
100
Write the word that describes each angle type.
A. 
B. 
C. 
A. right
B. acute
C. obtuse
100
What is the measure of Angle A?
30°
100
You are building a deck and need to figure out how much wood to buy to cover the surface.
area
100
A scientist is measuring the growth of a plant. The plant grew an average of 0.145 meters each week for 4 weeks. What is the total growth of the plant over the 4 weeks?
0.58 meters
100
List all the prime numbers between 10 and 20.
11, 13, 17, 19
200
What type of a triangle is this?
Hint: There are two ways to classify it. Earn double points for naming both.
right triangle
isosceles triangle
200
Determine the measure of Angle B.
19°
200
You want to put a fence around your garden to keep people from stepping on your plants.
perimeter
200
Maria is buying 3 bags of candy. Each bag costs $2.75. What is the exact total cost of the candy?
$8.25
200
Which of the following numbers is not composite?
39
53
72
81
53
300
What type of angle is this? What is it's angle measurement?
straight angle
180 degrees
300
What is the measure of Angle C?
80°
300
Your family bought a new swimming pool and needs to figure out how much water it will take to fill it.
volume
300
Paul had $334.67 in his bank account. He purchased some groceries for a family get-together. Now he has $177.89 in the bank. How much did the groceries cost?
$156.78
300
Mrs. Davis asked her students to find a number between 1 and 100 that is both an even number and a prime number. What number should they choose? Why is this the only number that fits both descriptions?
They should choose the number 2.
- It is an even number.
- It is a prime number because its only factors are 1 and 2.
- All other even numbers greater than 2 are composite because they can be divided by 1, themselves, and 2 (at least), meaning they have more than two factors.
400
What type of angle is this?
obtuse
400
What is the measure of the missing angle? 
72°
400
You are buying carpet to cover your bedroom floor.
area
400
Sarah has 25.5 pounds of dog food. She feeds her dog 3 pounds of food per week. Exactly how many weeks will the dog food last?
3.5 weeks
400
Which list contains only composite numbers?
A) 2, 4, 6, 8
B) 9, 15, 21, 33
C) 3, 5, 7, 11
D) 10, 17, 20, 25
B
500
Malik said the triangle below is an acute triangle. Shannon argued that it is an isosceles triangle. Who is corrrect? Explain.
They are both correct. The two hash marks show that it has two congruent sides, so it's isosceles. All angles are smaller than 90 degrees, so it is also an acute triangle.
500
Tania’s teacher asked the class to determine the measure of the angle marked with a y in the diagram below. Tania determined that polygon ABCD was a square and that line segment AC bisects angle A into two congruent angles. What is the measure of angle y?
45°
500
You’re building a rectangular sandbox and need to know how much sand to fill it with.
volume
500
Maureen and three friends decided to sell hot chocolate one day after school. If they made $32.84 in sales and split it evenly between each person, how much did each person receive?
$8.21
500
Which statement correctly describes the number 36?
A) It is a prime number because it only has factors of 1 and 36.
B) It is a composite number because it has factors other than 1 and 36.
C) It is a prime number because it is an even number.
D) It is a composite number because it is an odd number.
B
600
Imani says this triangle is both isosceles and equilateral. Evie disagrees and says it's only an equilateral triangle. Who is correct? Why?
Evie is correct. An isosceles triangle has at least two congruent sides. Since an equilateral triangle has three equal sides, it also fits the definition of an isosceles triangle.
(An equilateral triangle is a special case of an isosceles triangle)
600
Amoni measured the obtuse angle, DEF, shown below. She found it measured 130°. What is the measure of angle x (angle DEG)?
60°
600
Write the definition for each of the following words:
perimeter
area
volume
Answers will vary
Perimeter- the path or distance around any plane figure. It is a measure of length
Area- the surface included within a plane figure. Area is measured by the number of square units needed to cover a surface or plane figure
Volume- a measure of capacity of a three dimensional and is measured in cubic units
600
Jill needs 4 inches of string for each bracelet she makes. If she has 115.6 inches of string, how many bracelets can she make?
115.6 divided by 4 is 28.9, so she can make 28 bracelets
600
Look at the numbers 7, 12, 19, and 25. Which of these numbers are prime, and which are composite? Explain how you know for each number.
7: Prime. It only has two factors: 1 and 7.
12: Composite. It has more than two factors (1, 2, 3, 4, 6, 12).
19: Prime. It only has two factors: 1 and 19.
25: Composite. It has more than two factors (1, 5, 25).