Geometry Lesson 1 - Angles & Polygons
Q1–10 of 40What is the value of x in the given figure?
P, O, Q lie on a straight line, so the angles 7x and 3x on it must add to 180°.
In the given figure, find the value of (a + b)
P, O, Q lie on a straight line, so the angles 7x and 3x on it must add to 180°.
If 2a + 3, 3a + 2 are complementary, then a = ?
P, O, Q lie on a straight line, so the angles 7x and 3x on it must add to 180°.
If 5x + 17° and x + 13° are supplementary, then x = ?
P, O, Q lie on a straight line, so the angles 7x and 3x on it must add to 180°.
An angle is exactly half of its complementary angle, then find the angle.
P, O, Q lie on a straight line, so the angles 7x and 3x on it must add to 180°.
In the following figure, lines L1 and L2 are parallel to each other. Find the value of q.
Use the straight line for q + r (with the 45°), then use the fact that L1∥L2 to relate r to the 125° angle via co-interior angles.
In the given figure if L1 ∥ L2, then values of x, y, z are:
Use the straight line for q + r (with the 45°), then use the fact that L1∥L2 to relate r to the 125° angle via co-interior angles.
In the given diagram if BC || ED and ∠BAC = 70°, then find the value of d and c.
Use the straight line for q + r (with the 45°), then use the fact that L1∥L2 to relate r to the 125° angle via co-interior angles.
In the given diagram if AB || CD and ∠ABO = 60° and ∠BOC = 110°, find ∠OCD.
Use the straight line for q + r (with the 45°), then use the fact that L1∥L2 to relate r to the 125° angle via co-interior angles.
In the figure given, two parallel lines are intersected by a transversal. Then, find the value of x.
The two marked angles are on the same side between the parallel lines (co-interior/allied angles), so they sum to 180°: (3x+10°) + (x+10°) = 180°.