Extends forever in both directions with no endpoints
A Line.
100
A triangle that has 3 congruent (equal) sides.
An equilateral triangle.
100
How many degrees is half of a circle (a straight line)? How many degrees is a full circle?
Half of a circle measures 180 degrees.
A full circle measures 360 degrees.
100
Use the following description to estimate the closest benchmark angle:
This angle is acute and has a measure between 30 and 40 degrees. What is the closest benchmark angle?
45 degrees
100
What is the definition of an acute angle?
An acute angle measures less than 90 degrees.
200
A part of a line that has two distinct endpoints.
Line Segment.
200
A triangle that contains a right angle.
A right triangle.
200
Bill is walking in a circle in his backyard. He starts by walking 200 degrees clockwise. How many more degrees will Bill need to walk to complete a full 360 degree circle?
160 degrees.
200
Use the following description to estimate the closest benchmark angle:
This angle looks very similar to the corner of a piece of paper. What is the closest benchmark angle?
90 degrees (a right angle)
200
What is the definition of an obtuse angle?
An obtuse angle measures greater than 90 degrees.
300
Part of a line, has one fixed endpoint, and extends forever in only one direction.
A Ray.
300
A triangle that contains all equal angles.
An Equiangular triangle.
300
Tim is rotating the minute hand around a circular clock. He rotates the minute hand 100 degrees, then rotates it again 50 more degrees. How many more degrees will he need to rotate the minute hand to make a 360 degree rotation?
210 degrees.
300
Use the following description to estimate the closest benchmark angle:
This angle is obtuse and looks very similar to a straight line. What is the closest benchmark angle?
180 degrees.
300
A triangle contains two acute angles and one obtuse angle. What kind of triangle is this?
An obtuse triangle.
400
Two lines that intersect and form right angles.
Perpendicular Lines.
400
A triangle with exactly two equal sides.
An Isosceles triangle.
400
Jill uploads a picture to her iPad and makes several rotations to the picture. She first rotates it 45 degrees clockwise. Next, she rotates the picture 65 more degrees clockwise. Finally, she rotates the picture another 37 degrees clockwise. Write an equation, using a variable, to figure out how many more degrees she must rotate the picture to have made a complete 360 degree rotation?
45 + 65 + 37 + x = 360
OR
360 - 45 - 65 - 37 = x
Answer: x = 213 degrees.
400
Use the following description to estimate the closest benchmark angle:
This angle is obtuse and measures between 130 and 140 degrees. What is the closest benchmark angle?
135 degrees.
400
Name a capital letter from the alphabet that contains exactly one line of symmetry.
Answers could include A, B, C, D, E, M, T, U, V, W, or Y.
500
Lines that travel the same path but do not ever meet or intersect.
Parallel Lines.
500
A triangle that has no equal sides.
A Scalene triangle.
500
Jamie is also using her iPad to rotate a picture clockwise. She first rotates the picture 43 degrees. Next, she rotates the picture 89 degrees more in the same direction. Then, she rotates the picture 104 more degrees. Write an equation, using a variable, to figure out how many more degrees the picture would have to be rotated to make a 360 degree rotation.
43 + 89 + 104 + x= 360
OR
360 - 43 - 89 - 104 = x
Answer: x = 124 degrees
500
How many 45 degree rotations would it take to make a complete 360 degree rotation around a circle?
8 rotations (45 x 8 = 360)
500
Identify two capital letters from the alphabet that contain at least two lines of symmetry. Write these letters on the board, and use a dotted line to prove these letters have symmetry.