Scale Drawings
Draw Geometric Figures/Draw Triangles
Solve Problems with Angle relationships
Circumference/Area
Cross Sections/Surface Area
100
What is a scale drawing?
It is an enlarged or reduced drawing of an object that is proportional
100
What is the first step when using a protractor?
Line the protractor up at the vertex and the line across the bottom or side.
100
Define vertical angles.
They have equal measures
100
What is the formula for circumference of a circle?
What is the formula for area of a circle?
Circumference: Pi times diameter
Area: Pi times radius squared.
100
What is a cross-section?
A cross section is a two dimensional shape that is exposed when a slice is made through a three-dimensional object.
200
Use a proportion to find the actual length of the picture.
The scale is 1 in = 4 feet.
The drawing is 10 in. by 8 in.
The picture is actually 32 feet by 40 feet
200
When using the protractor how do you know to use the inside or the outside numbers.
Answers will vary.
200
Complementary angles have a sum of...
Supplementary angles have a sum of...
Complementary add up to 90 degrees.
Supplementary add up to 180 degrees.
200
If a circle has a radius of 3cm what is the circumference?
18.84 cm
200
Name the shape.
All six faces are rectangles and all vertices are 90 degree angles.
A right rectangular prism.
300
What is the perimeter of the actual window?
The window drawing is 0.75 in. The scale is 1 in = 2 m.
The window is 2.25 meters squared.
300
How many triangles can you draw given three side lengths?
One unique triangle.
300
A right angle has two adjacent angles inside of it. One is equal to 36 and the other is equal to 3x. What is the value of x?
x is 18 degrees.
300
If a circle has a radius of 5 feet. What is the area?
The area of the circle is 78.5 feet squared.
300
Name the shape.
Five faces, four are triangles and the fifth is a rectangle.
A right rectangular pyramid.
400
How many triangles can you draw given three angles.
More than one.
400
Two vertical angles have the following measurements:
2x + 16 and 6x. What is the value of x?
x is 4 degrees
400
When given the area of a circle, explain how to find the circumference?
First you have to find the radius by plugging it into the formula A is pi times radius squared. Then, you have to multiply the radius by two to find the diameter. Last you multiply that by pi to find the circumference.
400
A box that is 5in by 5in by 5in is cut vertically. What is the area of the cross section?
25 inches squared.
500
What figure could you draw with two 80 degree angles and two 100 degree angles? (Name 2)
Isosceles trapezoid, parallelogram, quadrilateral, rhombus
500
m<1 is 4 times the m<2. <1 and <2 are complementary. <1 and <3 are vertical angles. <3 and <4 are supplementary. What are the measures of the 4 angles?
<1 is 72 degrees
<2 is 18 degrees
<3 is 72 degrees
<4 is 108 degrees
500
Ellie is building a circular patio. What is the area of the patio if he bricks around the edge are 176 feet?
It is about 2,484 square feet.
500
What is the surface area of this box?
2,386 inches squared.