The Angle Agenda
These two angles add up to exactly 90°.
What are complementary angles?
This triangle has three equal sides and three equal angles of 60°.
What is an equilateral triangle?
This is the formula for the area of a rectangle.
What is Length x Width (or A = l x w)?
To find the volume of a rectangular prism, you multiply these three dimensions.
What are length, width, and height?
The sum of all interior angles in any triangle is always this many degrees.
What is 180°?
When two lines intersect, the angles across from each other are equal. This is the name for those angles.
What is 70°? (Sum must be 180°).
This type of triangle has two equal sides.
What is an isosceles triangle?
A backyard rink is 10 m long and 4 m wide. This is the total distance around the edge.
What is 28 m? (Perimeter: 10+10+4+4).
This is the volume of a box that is 5 cm long, 2 cm wide, and 10 cm high.
What is 100 cm³?
In a right-angled triangle, if one acute angle is 30°, the other must be this.
What is 60°?
If Angle A and Angle B are supplementary and Angle A is 110°, this is the measure of Angle B.
What is 70°? (Sum must be 180°).
This type of triangle has no equal sides and no equal angles.
What is a scalene triangle?
A square has an area of 64 cm². This is the length of one side.
What is 8 cm?
An example of what a unit of volume is.
What is cm³, m³, mL or L
A triangle has angles of 55° and 65°. This is the third angle.
What is 60°?
This is the measure of the missing angle in a pair of supplementary angles where one angle is 4.5 times larger than its 20° neighbor.
What is 160°? (180 - 20 = 160).
An isosceles triangle has two angles measuring 70° each. This is the measure of the third angle.
What is 40°? ($180 - 140 = 40$).
If the perimeter of a rectangle is 30 cm and the length is 10 cm, this is the width.
What is 5 cm? (30 - 20 = 10; 10/2 = 5).
A prism has a base area of 25 cm² and a height of 4 cm. This is its volume.
What is 100 cm³? (V = Base Area x height)
In an isosceles triangle, the "vertex" angle is 100°. These are the measures of the two equal base angles.
What are 40° and 40°? (180 - 100 = 80; 80/2 = 40).
True or False: Two obtuse angles can be supplementary.
What is False? (Two obtuse angles would exceed 180°).
If a triangle has side lengths of 3 cm, 4 cm, and 5 cm, and one angle is exactly 90°, it is named these two things.
What is a scalene right triangle?
A rectangular garden has an area of 48 m². If the sides must be whole numbers, this is the side-length combination that creates the smallest possible perimeter.
What is 6 m and 8 m? (Perimeter = 28 m).
A rectangular tank holds 60 m³ of water. If the base is 5 m by 3 m, this is how deep (high) the tank is.
What is 4 m? (60/15 = 4).
In a triangle, the second angle is double the first angle, and the third angle is triple the first angle. Provide the measurements of all three angles.
What are 30°, 60°, and 90°?