Find missing angles (straight line, corner, crossing lines)
Grade 7 Math Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
Bo props the classroom door open for a breeze, and one curious bee flies in. The door makes a 122° angle with the straight wall. What is angle x on the other side, in degrees?
Kira sews a straight stitch line out from the square corner of a quilt patch. One part of the corner is 27°. What is the other part, angle x, in degrees?
Luz draws a line from the square corner of a sheet of paper for a fold-it-yourself project. One part of the corner is 58°. What is the other part, angle x, in degrees?
Milo hangs a string of paper stars from the square corner of the window frame. One part of the corner is 33°. What is the other part, angle x, in degrees?
Noah runs a strip of tape out from the square corner of a box flap (the cat is very interested). One part of the corner is 71°. What is angle x, in degrees?
Pia opens a pair of craft scissors, and the blades cross like an X. One angle between the blades is 42°. What is angle x, next to it, in degrees?
On Tala's town map, two straight streets cross by the library. One angle at the crossing is 64°. What is angle x, next to it along the same street, in degrees?
Esme cuts a straight line from the square corner of a paper square for a pinwheel. It splits the corner into a 16° angle and angle x. What kind of angle pair are they?
- Supplementary angles: they add to 180°
- Complementary angles: they add to 90°
- Vertical angles: they are equal
Kira pushes the art-room door open (paint smell included). The door makes a 139° angle with the straight wall, and angle x is on the other side. Which equation finds x?
- x + 139 = 90
- x + 139 = 360
- x = 139
- x + 139 = 180
Milo's safety scissors cross like an X while cutting out a paper crown. Angle x is across from a 47° angle. Which equation finds x?
- x = 47
- x + 47 = 180
- x + 47 = 360
- x + 47 = 90