Proving the Sum of the Interior Angle Measures of a
Triangle Is 180°
Try it
Given: yll...
Mathematics, 18.07.2020 01:01 aaronscott6474
Proving the Sum of the Interior Angle Measures of a
Triangle Is 180°
Try it
Given: yll z
Prove: m25+ m2 2 + m26 = 180°
Angles Lines Statements Reasons
given
def. of
substitution
def. of straight angle
A
M
1
2 3
Y
Reasons
2. angle addition postulate
5
6
7 z
Statements
✓ 2. m 21+ m2 2 + m23 =
mZLAM
✓ 3. m21+ m2 2 + m23 = 180
4. 21-25
5. 23-26
6. mZ1 = m25
✓ 7. m3 = m26
✓ 8. m25+ m2 2 + m26 = 180
3. def. of straight angle
4. alternate interior angles theorem
5. alternate interior angles theorem
6. def. of
7. def. of
С
B
Correct! You have completed this
exercise
8. substitution
Answers: 1
Mathematics, 21.06.2019 19:30
Nikolas calculated the volume of the prism. his work is shown below.
Answers: 1
Mathematics, 21.06.2019 21:50
Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next
Answers: 1
SAT, 09.12.2021 02:40
SAT, 09.12.2021 02:40
Computers and Technology, 09.12.2021 02:40
History, 09.12.2021 02:40
Biology, 09.12.2021 02:40
SAT, 09.12.2021 02:40
History, 09.12.2021 02:40