Question

1.3.3 quiz: basic postulates in geometry question 6 of 10 which angles are obtuse? check all that apply. a. ∠mlk b. ∠gfe c. ∠dba d. ∠dbc

Explanation:

Step1: Recall obtuse - angle definition

An obtuse angle is an angle whose measure is greater than 90° and less than 180°.

Step2: Analyze ∠MLK

∠MLK is a right - angle (90°), so it is not obtuse.

Step3: Analyze ∠GFE

∠GFE is less than 90°, so it is an acute angle, not obtuse.

Step4: Analyze ∠DBA

∠DBA is greater than 90° and less than 180°, so it is obtuse.

Step5: Analyze ∠DBC

∠DBC is greater than 90° and less than 180°, so it is obtuse.

Answer:

C. ∠DBA, D. ∠DBC