Lines and Rays
This figure has one endpoint and continues forever in one direction.
a ray
This shape always has 4 sides and 2 pairs of parallel sides.
parallelogram
Would a 35° angle be acute, right, or obtuse?
This shape has 2 lines of symmetry:
A rectangle or a scalene triangle?
Rectangle
Two angles equal 90° total. One angle is 25°.
What equation helps solve for the missing angle m?
25 + m = 90
A figure continues forever in both directions and has no endpoints.
a line
Choose all that describe every rectangle:
A. 4 sides
B. 4 right angles
C. All sides equal
D. 2 pairs of parallel sides
A, B, and D
Choose all angles that are obtuse:
A. 110°
B. 82°
C. 145°
D. 180°
A, C
(D is classified as a straight angle)
Which shape has at least one line of symmetry?
A. Scalene triangle
B. Square
C. Parallelogram
A square
Two angles total 100°. One angle measures 65°.
Find the missing angle.
35°
Two lines on railroad tracks never cross. These are called __________ lines.
parallel lines
A triangle has all different side lengths and one right angle.
Right scalene triangle
A student measures an angle at 90°. What type of angle is it?
Right angle
How many lines of symmetry does a regular triangle (equilateral triangle) have?
3
A full right angle equals 90°. One part is 48°
Find the missing angle.
42°
A figure has 2 endpoints and does not continue forever.
line segment
A triangle has 2 equal sides and one obtuse angle
isosceles obtuse triangle
Would 172° be acute, right, obtuse, or straight?
Obtuse
Choose all figures with more than one line of symmetry:
A. Square
B. Rectangle
C. Scalene triangle
D. Regular hexagon
A, B, D
Two angles total 150°. One angle is 87°.
Find the missing angle.
63°
Mrs. Carter draws a figure with 1 endpoint that stretches forever toward the playground. How many directions does it continue?
One direction
Choose all true statements about all parallelograms:
A. 4 sides
B. 1 pair of parallel sides
C. 2 pairs of parallel sides
D. Always 4 right angles
A and C
Mrs. Green drew an angle measuring 58°. Is it acute or obtuse?
Acute
A shape has exactly 1 line of symmetry and 2 equal sides. What shape could it be?
isosceles triangle
Lena says the missing angle equation is:
x − 120 = 50
The total angle is 120°, and one part is 50°.
Is Lena correct? If not, write the correct equation.
No, 50 + x = 120