Is the conjecture true or false?

Question

Given <1 and <2 are supplementary

conjecture: m<1 + m<2 = 90

Answer 1

Greetings! Lets solve this shall we ?

Assumption: Given the measure of angle 1 and angle 2 are supplementary.

Conjecture: the measure of angle 1 + the measure of angle 2 equal to 90 degrees.

Proof: False. By definition, the sum of two complementary angles equal 90 degrees; not the sum of two supplementary angles.

I hope this helped!