An obtuse triangle has one obtuse angle, or an angle that measures more than 90° but less than 180°. Options 1 and 2 are not correct, because these are acute angles.
So, one of the angles must be 40°, and the other may be 100° or 120°.
The measures of the angles in a triangle add up to 180°.
$40^\circ + 40^\circ +x = 180^\circ \\
80^\circ + x=180^\circ \\
x=180^\circ - 80^\circ \\
x=100^\circ$
The other two angles are 40° and 100°.

5 0

2 years ago

Read 2 more answers

Ask me by rounding each mixed number to the nearest whole number 11/18+6 1/10

Agata [3.3K]

The answer is below what the dude said

4 0

3 years ago

(High points) please solve both with explanation. I’ll give brainliest.

lawyer [7]

Answer:

$36\frac{9}{16}$

area: 136 cm

perimeter: 48 cm

Step-by-step explanation:

For the first one just subtract

$45\frac{1}{2}=\frac{91}{2}=\frac{364}{8}\\8\frac{7}{8}=\frac{71}{8}\\\frac{364}{8}-\frac{71}{8}=\frac{293}{8}\\\frac{293}{8}=\frac{586}{16}\\\\\frac{586}{16}-\frac{1}{16}=\frac{585}{16}=36\frac{9}{16}$

for the second one you just have to break it into smaller, more digestible pieces (work below)

7 0

2 years ago