Question

n a geometry class, the students were asked to prove the theorem below by contradiction:
Theorem: A triangle has at the most one obtuse angle.

Heather begins the proof with an assumption. Which statement will she most likely use as an assumption? (1 point)


Let two angles of a triangle be obtuse.
Let each angle of a triangle be acute.
Let only one angle of a triangle be obtuse.
Let two angles of a triangle be right.

Answer 1

@ganeshie8

Answer 2

C

Answer 3

can you help with somemore? @17890

Answer 4

Justin wrote the following indirect proof:
Prove: 7 is a factor of 91.

Step 1: Assume that 7 is a factor of 91.

Step 2: 91 divided by 7 is 13.

Step 3: A factor is an integer by which another integer is divisible.

Step 4: Therefore, 7 must be a factor of 91.

Which step in Justin's proof is incorrect? (1 point)


Step 1
Step 2
Step 3
Step 4

Answer 5

@ganeshie8