Lines
What is the definition of perpendicular lines?
They intersect and form 90 degree angles.
What is the name for a triangle with 3 equal sides?
Equilateral.
How many obtuse angles does an obtuse triangle have?
Only one obtuse angle. The other two are acute.
Describe a rhombus
A rhombus Is a quadrilateral with opposite sides that are parallel and opposite sides that are equal.
The average distance from Earth to the moon is 238,855 miles. What is this distance rounded to the nearest thousand?
239,000
Draw an example of interesting lines.
See drawings
What is the name for a triangle with no sides that are equal?
Scalene
Sylvia says a right triangle can have only one right angle. Jose says a right triangle can have more than one right angle. Who is correct?
Sylvia is correct because a right triangle has only one right angle. The other two are acute.
Describe a trapezoid.
A trapezoid has only one pair of parallel lines.
A construction crew is paving a highway. If they start work at 10 minute past 6am and finish work at 20 minutes to noon, how long did they work?
5 hours and 30 minutes.
What is the name for two lines that will never touch?
Parallel Lines
What is the name for a triangle with two sides that are equal?
Isoceles
Describe the angles of an acute triangle.
All three angles are acute.
Tia says every square is a rectangle and every square is a rhombus, so every rectangle must be a rhombus. Do you agree? Explain.
No. Any rectangle that has two pairs of sides with different lengths is not a rhombus. A rhombus has equal sides.
Springfield has a population of three hundred four thousand, twenty.
Greenville has a population of three hundred forty thousand, two.
Correctly compare both populations.
304,020 < 340,002
If all perpendicular lines are intersecting, are all intersecting lines also perpendicular?
No, because perpendicular lines intersect to form a right angle and other intersecting lines could form acute or obtuse angles.
Can a triangle have more than one right angle?
No
The angles of a triangle can be added together to equal how many degrees?
180 degrees.
Is it possible for a quadrilateral to be both a rhombus and a parallelogram?
Yes. If both sets of sides are parallel, it is a parallelogram. If both sets of sides are also equal in length it will be a rhombus.
Mt. Etna is a volcano that measures 10,925 feet above sea level at its highest point. This is 11,664 feet less than the height of the world’s highest volcano. What is the height of the volcano?
22,589 feet
Ali said that if two lines share a point, they cannot be parallel. Do you agree? Why?
Yes, because they would cross at the point and parallel lines never touch.
If one of the sides of an equilateral triangle measures 5 feet, what is the total perimeter of the triangle?
15 feet.
Draw a correctly labeled
a. equilateral triangle
b. Isosceles triangle
c. scalene triangle
See drawings.
The sides of an equilateral triangle are equal in length. Is an equilateral triangle also a rhombus?
No, because a rhombus has 4 sides and a triangle only has 3.
Ruth and Mari sold fruit baskets for a fundraiser. Ruth sold 42 fruit baskets. Mari sold twice as many fruit baskets as Ruth. They sold each basket for $9. What is the total amount of money Ruth and Mari made selling fruit baskets?
$1,134