The sum of adjacent angles of a parallelogram is
(a) 180° (b) 120° (c) 360° (d) 90°
If PQRS is a parallelogram, then ∠P – ∠R is equal to
(a) 60° (b) 90° (c) 80° (d) 0°
If two adjacent angles of a parallelogram are in the ratio 2 : 3, then
the measure of angles are
(a) 72°, 108° (b) 36°, 54° (c) 80°, 120° (d) 96°, 144°
In a parallelogram PQRS, if ∠P = 60°, then other three angles are
(a) 45°, 135°, 120° (b) 60°, 120°, 120°
(c) 60°, 135°, 135° (d) 45°, 135°, 135°
If A + B > C + D, B + E = 2C and C + D > B + E, it necessarily follows that :
(A) A + B > 2 C (B) A + B > 2D (C) A + B > 2E (D) A > C
The number of sides of a regular polygon where each exterior angle
has a measure of 45° is
(a) 8 (b) 10 (c) 4 (d) 6
A quadrilateral has three acute angles. If each measures 80°, then
the measure of the fourth angle is
(a) 150° (b) 120° (c) 105° (d) 140°
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