Question

I need help with this question! The black part are the answer options

Answer 1

For this case we have the followinf:

Triangle ABD is isoceles with base BD, AC perpendicular BD Definition of isosceles triangle

AB congruent to AD: Given

< 1 and < 2 are right triangles definition of perpendicular

AC congruent to AC Reflexive

Triangle ABC and ADC are right triangles Definition of right triangle

Triangle ABC congruent to triangle ADC HL

< BAC = < DAC CPCTC