Question

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Answer 1

Answer:

8. ○ $\displaystyle 35°$

7. ○ $\displaystyle right$

6. ○ $\displaystyle isosceles$

5. ○ $\displaystyle 108°$

4. ○ $\displaystyle 34,9°$

3. ○ $\displaystyle supplementary$

2. ○ $\displaystyle none\:of\:these$

1. ○ $\displaystyle \: \: → \\ CD$

Step-by-step explanation:

8. Use the Triangular Interior Angles:

180° = x° + 105° + 40°

180° = x° + 145°

- 145° - 145°

____________

$\displaystyle 35° = x$

7. This is obviously a right triangle.

6. A triangle with two congruent sides is considered an isosceles triangle.

5. Supplementary Angles sum up to 180°:

180° = x° + 72°

- 72° - 72°

___________

$\displaystyle 108° = x$

4. Complementary Angles sum up to 90°:

90° = 55,1° + x°

- 55,1° - 55,1°

____________

$\displaystyle 34,9 = x$

3. These angles are considered supplementary angles because they sum up to 180°.

2. These two angles are congruent, according to the Vertical Angles Theorem, which is NOT an option, so you would choose none of these.

1. This is considered a ray [from endpoint to infinity], so you would choose this option.

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Answer 2

Answer:

8. ○ 7. ○ 6. ○ 5. ○ 4. ○ 3. ○ 2. ○ 1. ○

Step-by-step explanation:

Step-by-step explanation:8. Use the Triangular Interior Angles:180° = x° + 105° + 40° 180° = x° + 145°- 145°        - 145°____________7. This is obviously a right triangle.6. A triangle with two congruent sides is considered an isosceles triangle.5. Supplementary Angles sum up to 180°: 180° = x° + 72°- 72°        - 72°___________4. Complementary Angles sum up to 90°: 90° = 55,1° + x°- 55,1° - 55,1°____________