supplementary and complementary angles
alternate interior angles, alternate exterior angles, and corresponding angles
properties of triangles and right angles.
Pythagorean Theorem
Calculate perimeter.
103
An angle measures 20 degree. Find its supplementary.
a+ b = 180 degree
a+20= 180 degree
subtract 20 both side
Answer: 180 – 20 = 160 degree.
103
Identify the alternate interior angles, alternate exterior, and corresponding angles.
< 2 and < 6 are Corresponding angles
< 4 and < 8 are Corresponding angles
< 1 and <5 are Corresponding angles
< 1 and < 8 are Alternate exterior angles
< 2 and < 7 are Alternate exterior angles
< 4 and < 5 are Alternate interior angles
< 3 and < 6 are Alternate interior angles
103
Triangle has three angles that add up to 180 degree. One angle is 120 degree and second angle 20 degree. Find the third angle.
120° + 20°+ x = 180°
140 + x= 180°
-140 -140
X= 40°
103
Find the length of hypotenuse c
a=10
b= 12
c =?
c= 22
103
The length of a rectangle is 30 meters, and the width is 9 meters. Find the Perimeter.
P= 2(30) + 2(9)
P= 60
206
If angle D and C are Complementary angles and angle d is 67 degree. Find the measure of angle c.
Answer: C+D= 90 degree
C+67 degree = 90 degree
Subtract 90 degree from 67 degree
C = 23 degree.
206
Solve for the x
< 1 and < 8 are alternate exterior angles, so it means that these angles are equal each other .
We going to set them equal.
Answer: 4x + 12 = 15x + 2
-4 -4
12= 11x + 2
-2 -2
10= 11x
Then 10 divded by 11
X= 0.91
206
Find the missing angle of right triangle Angle A is missing, Angle B is 90 degree and Angle C is 60 degree.
A+B+C= 180 degree
90 degree + X + 60 degree= 180 degree
90+ 60 = 150
180- 150= 30 degree
206
Right tringle has three sides. side a is missing, side b is 6 and side c is 8. Use Pythagorean Theorem to find length of side a.
a=6.93
206
Find the perimeter of equilateral triangle .
side a is 6
P= 6+6+6 =18