Find missing angles (straight line, corner, crossing lines)
Grade 7 Math Worksheet
Circle the best answer, or write your answer on the line.
Ren paints two stripes out from the square corner of a giant toy block. The stripes split the corner into 18°, x and 35°. What is x, in degrees?
Two roads cross by Zee's park. A bike path from the crossing splits one angle into adjacent angles, 38° and 27°. Angle x is across from that whole angle. What is x?
Jun swings the gym door open for the relay race. The angles on each side of the door are supplementary: 84° and (3x)°. What is x?
Luz sticks a paper chain out from the square corner of a window. It splits the corner into complementary angles of 22° and (4x)°. What is x?
Milo's scissors open wide, and the blades cross like an X. Angle x is across from a 137° angle. What kind of angle pair are they?
- Vertical angles: they are equal
- Supplementary angles: they add to 180°
- Complementary angles: they add to 90°
At sunset a ray of light reaches the flat lake by Noah's tent. The angles on each side of the ray are 21° and x. What kind of angle pair are they?
- Supplementary angles: they add to 180°
- Vertical angles: they are equal, and sit across from each other
- Complementary angles: they add to 90°
Ren stands a pencil on a flat ruler for a wobbly science demo. The angles on each side of the pencil are 152° and x. What kind of angle pair are they?
- Vertical angles: they are equal
- Supplementary angles: they add to 180°
- Complementary angles: they add to 90°
Tala stitches a line out from the square corner of a quilt square. It splits the corner into 40° and (5x)°. Which equation finds x?
- 5x + 40 = 90
- 5x + 40 = 360
- 5x + 40 = 180
- 5x = 40
Zee's kite sticks cross like an X. The (x + 25)° angle is across from a 94° angle. Which equation finds x?
- x + 25 + 94 = 90
- x + 25 + 94 = 180
- x + 25 = 94
- x + 25 + 94 = 360
Luz paints three spokes of a bike wheel bright colors. The painted spokes make angles of 62°, 104° and x around the hub. What is x, in degrees?