Question

sum of triangle = 180°
90+×+× = 180°
90+2× = 180°
2× = 180°-90°
2× = 90°
× = 90°/2
× = 45°

angle A and angle C = 45°
straight angle =180°
45°+× = 180
× = 180°- 45°
× = 35° ​

Answer 1

Answer:

sum of triangle = 180°

90+×+× = 180°

90+2× = 180°

2× = 180°-90°

2× = 90°

× = 90°/2

× = 45°

angle A =C=45°