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Geometry

Angles and Lines

Intro

Concept Quizzes

Geometry Warmup - Angles and Lines
Basic Angle Chasing
Types of Angles
Complementary and Supplementary Angles
Parallel Lines
Perpendicular Lines
Patterns In Geometry
Angles and Lines - Problem Solving

Challenge Quizzes

Angles and Lines: Level 1 Challenges
Angles and Lines: Level 2 Challenges
Angles and Lines: Level 3 Challenges

Parallel Lines

In parallelogram $ABCD$ , we are given that the green angle $\angle ABC = 142 ^ \circ$ . What is the yellow angle $\angle BCD$ ?

38 ^\circ

71 ^\circ

42 ^\circ

142 ^\circ

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by Brilliant Staff

The green and blue lines are parallel, and A and B are points on the green line. If the shortest distance from A to the blue line is 5, what can we say about the shortest distance from B to the blue line?

It is greater than 5 It is equal to 5 It is less than 5 Cannot be determined

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by Brilliant Staff

If $l \parallel m$ , and $\angle a = 21^\circ$ , what is the measure of $\angle b$ in degrees?

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by Brilliant Staff

Trapezoid $ABCD$ has $\angle D = \color{#3D99F6}{x}$ and $\angle A = \color{#20A900}{2x + 12^\circ}$ . What is the measure of $\angle D$ ?

52^\circ

59^\circ

55^\circ

56^\circ

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by Brilliant Staff

In the above diagram, if $l \parallel m,$ what is the measure of $\color{#3D99F6}{\angle A}+\color{#20A900}{\angle B} ?$

{134}^\circ

{137}^\circ

{140}^\circ

{131}^\circ

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by Brilliant Staff

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