Free Online Math Games Play the game Full Teacher Guide Pre-assessment Visual notes Worksheet Exit ticket

A warm-up for the start of class, before students play or start the worksheet. It reviews the angle pairs from grade 7 using things students see every day, then asks them to think ahead to parallel lines. Two tickets print on each page; cut along the dashed line. The answer key prints on its own page after it.

Entry Ticket: Angles All Around You

Grade 8 · Warm-up · Reviews 7.G.B.5
Name
1. The ladder makes 58° with the ground. Find x, its angle with the wall.
x = °
2. The skate ramp rises at 24°. Find x, the angle on the other side of the ramp.
x = °
3. The scissors' blades open to 35°. Find x, the angle between the handles.
x = °
4. Think ahead: an avenue crosses two parallel streets. Do you think the corners at the two crossings have the same angles? Why?

Answer Key: Entry Ticket

Angles All Around You
  1. 90 − 58 = 32°: the wall and ground make a right angle, so the ladder's two angles are complementary.
  2. 180 − 24 = 156°: the two angles sit on the straight ground line, so they are supplementary.
  3. 35°: the blades and the handles are vertical angles, so they are equal.
  4. Any reasoning counts here. The answer students will discover today: yes, when the streets are parallel, the avenue crosses both at the same angle, so the matching corners are equal.

Quick read: 122° on #1 means the student used 180 instead of 90; 66° on #2 means the reverse. Students who miss #3 often think the handles' angle is "the rest" of the turn; point to the X the scissors make. Use #4 to open the lesson, then check it in the Math Billiards Practice mode with parallel-line shots turned on.