Name _______________________________________________
Class__________________
LESSON 8.1 HW
Complete the statement.
1. A straight angle is an angle with a measure of ______________.
2. A ______________ angle measures 90°.
3. Supplementary angles are two angles whose measures add up to ______________.
4. _____________ angles are two angles whose measures add up to 90°.
5. _____________ angles are a pair of angles, formed by two intersecting
lines, that don't share a side.
6. Perpendicular lines are two lines that intersect at a _____________ angle.
7. _____________ lines are two lines in the same plane that do not intersect.
Tell whether the angles are complementary, supplementary, or neither. SHOW THE MATH!
8. m1 = 38°, m2 = 142°
9. m1 = 93°, m2 = 15°
10. m1 = 36°, m2 = 54°
Find the angle measure.
11. 1 and 2 are supplementary, and m1 = 27°. Find m2.
12. 3 and 4 are complementary, and m4 = 64°. Find m3.
In Exercises 13 and 14, find the measures of the numbered angles.
13.
14.
15. In the diagram, m3 = 123° Find the measure of each angle
16. In the diagram, m2 = 71°. Find the measure of each angle.
17.
1
2
4
3
Given:
m1= 2x + 10
m2= x - 55
Find the value of x and the measurement of all 4 angles.
Use what you have learned to solving the following puzzle. Find the value of the variable
and the angle measures.
18. m1 = 3x° and m3 = (7x – 40)°
19. m7 = 4x° and m8 = (96 + 3x)°
20. m6 = (6 + 2x)° and m5 = (3x – 17)°