Answer:
3
Step-by-step explanation:
The diagonal line on the left decrements first by 13, then 11, then 9, then 7, which means for row 1 it decrements by 5. 8-5=3. The number is also 3 when you look at the diagonal line on the right. It starts on the bottom as decrements of 15, then 13, then 11, then 9, and finally 7. 10-7=3.
Answer:
D
Step-by-step explanation:
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠ BCD is an exterior angle of the triangle, thus
∠ BCD = 50° + 60 = 110° → D
Answer:
B.......
Step-by-step explanation:
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Answer:
x = 90°
y = 40°
z = 40°
Explanation (Concepts) :
A straight line has total 180° angle. A square has 4 sides of each 90° angle. A triangle is build up of 180° interior angle.
Workouts:
z + 90° + 50° = 180°
z = 180° - 90° - 50°
z = 40°
=================
x + 90° = 180°
x = 180° - 90°
x = 90°
==================
50° + 90° + y = 180°
y = 180° - 90° - 50°
y = 40°
Answer:
1
Step-by-step explanation:
