Figures and Labels
Triangles
Polygons
Angles
Forming Triangles & Angles
100
This figure goes on forever in both directions
A line
100
What is an equalilateral triangle?
A triangle with all equal sides.
100
What is a four-sided shape called?
quadrilateral
100
An angle less than 90 degrees is a(n)......
acute angle.
100
Where do I have to put the circle on my protractor in order to measure an angle correctly?
On the vertex of the angle.
200
A segment is something that ___________ and __________.
starts and stops
200
A right triangle is a triangle that has what in it?
a right angle.
200
Is a rectangle an example of a parallelogram?
Yes, it has 2 sets of parallel sides.
200
Draw an obtuse triangle.
check
200
Do the sides 4 in, 5 in, and 2 inches make a triangle?
Yes, 4 + 2 = 6 and 6 is longer than 5.
300
The symbol for parallel lines looks like what?
ll
300
What is a scalene triangle?
A triangle with no sides that are the same length.
300
What is special about a trapezoid?
It has 1 set of parallel sides.
300
What symbol tells me that an angle is a right angle?
A square in the corner.
300
How do you know what set of numbers to use on a protractor?
Depending on if you have an acute or obtuse angle.
400
What does it mean if two lines are perpendicular?
They will cross and make a 90 degree angle.
400
Draw an acute triangle.
check
400
What makes a shape a polygon?
made of sides, no sides cross, no gaps
400
What type of angle is 178 degrees?
obtuse
400
Can 3 ft, 9 ft, and 6 ft make a triangle?
No, 2 + 6 = 9 and 9 is not longer than 9.
500
Use letters and symbols to show that line AB and line RG are perpendicular.
check :)
500
Can I have an obtuse triangle that is also an isosceles triangle?
Yes, I can make a triangle that has an obtuse angle and also has 2 sides the same length.
500
What is a regular polygon?
A polygon where all the sides are equal length and all the angles are equal measure.
500
If I add a 23 degree angle and an 89 degree angle together what type of angle did I make, acute, right, or obtuse?
Obtuse. 23 + 89 is 112.
500
How do you know if 3 side lengths make a triangle?
If the two shortest sides add up to LONGER than the biggest side.
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