Vocabulary Part 1
Two angles that add up to be 90 degrees
What is complementary angles
The total area of the outside surface of a 3-dimensional object
What is surface area
Name the equation to find the area of a triangle
Area = Base x Height / 2
OR
Area = 1/2 (Base x Height)
Name the area of a triangle where base = 6 cm and height = 4 cm.
Area = 12 cm2 (6 x 4 = 24 / 2 = 12)
Find the missing angle of the triangle where two angles are 60 degrees and 30 degrees.
What is 90 degrees. (60 + 30 + 90 = 180)
an instrument for measuring angles marked with degrees along the curved edge
What is a protractor
two angles that share a common vertex and a common side, but they do not overlap
What is adjacent angles
Name the equation to find the area of a rectangle or square
Area = Length x Width
Name the surface area of a cube where the side length is 2 cm.
24 cm2 (2 x 2 = 4 cm to get one square, there are 6 squares of a cube so 4 x 6 = 24 cm2)
Two angles are supplementary to each other, one angle is 110 degrees, what is the missing angle measurement?
The missing angle measurement is 70 degrees. (70 + 110 = 180)
The amount of space a 3-dimensional object holds.
What is volume
A point where two or more lines, curves, or edges meet
What is a vertex
Name the equation to find the volume of a rectangular prism
Volume = Length x Width x Height
Name the area of a triangle where base = 5 cm and height = 10 cm.
25 cm2 (5 x 10 = 50 / 2 = 25 cm2)
Two angles are complementary to each other, one angle is 25 degrees, what is the missing angle measurement?
The missing angle measurement is 65 degrees (25 + 65 = 90)
Two angles that add up to be 180 degrees
What is supplementary angles
each of the pairs of opposite angles made by two intersecting lines
what are vertical angles
Name the equation or describe how to find the volume of a triangular prism
Volume = 1/2(base x height) x length
(First, find the area of the triangles by doing 1/2 base x height, then multiply it by the length between the triangular bases.)
Name the volume of a triangular prism where the base = 4 cm, the height = 5 cm and the length = 12 cm
120 cm3 (5 x 4 = 20 / 2 = 10 x 12 = 120 cm3)
Two angles are supplementary to each other, one angle is 70 degrees, what is the missing angle measurement?
The missing angle measurement is 130 degrees (70 + 130 = 180)
a surface or shape that would be exposed by making a straight cut through something, especially to an axis.
What is a cross section
a 3-dimensional object with two identical, parallel bases
What is a prism
What is the difference between the volume equation for a rectangular prism and the volume equation for a triangular prism?
For a triangular prism you need to multiple the base and the height, then divide by 2. Triangular prisms you multiply length x width x height.
Name the area of a triangle where the base is 12 cm and the height is 16 cm.
96 cm2 (12 x 16 = 192 / 2 = 96 cm2)
Two angles are complementary to each other, one angle is 75 degrees, what is the missing angle measurement?
The missing angle is 15 degrees (75 + 15 = 90)